Thorlabs offers high-power, polarizing beamsplitter cubes designed for use at 405 nm, 633 nm, the 780 - 808 nm range, or with one of three major Nd:YAG harmonics (355 nm, 532 nm, or 1064 nm). The aspheric lens with a focal length that is closest to 16 mm has a focal length of 15.29 mm (Item# 354260-B or A260-B). Please note that we have a buffer built in between the specified damage thresholds online and the tests which we have done, which accommodates variation between batches. Thorlabs recommends the use of safety eyewear whenever working with laser beams with non-negligible powers (i.e., > Class 1) since metallic tools such as screwdrivers can accidentally redirect a beam. Aspheric lenses are designed to focus or collimate light without introducing spherical aberration into the transmitted wavefront. If your maximum energy density is less than this adjusted LIDT maximum energy density, then the optic should be suitable for your application. For pulse widths between 1 - 100 ns, an approximation is as follows: Use this formula to calculate the Adjusted LIDT for an optic based on your pulse length. From optomechanical components to telecom test instrumentation, Thorlabs' extensive manufacturing capabilities allow us to ship high quality, well priced components and devices for next-day delivery. If an unmounted aspheric lens is being used to collimate the light from a point source or laser diode, the side with the greater radius of curvature (i.e., the flatter surface) should face the point source or laser diode. In this regime, the LIDT given as a linear power density can be applied to any beam diameter; one does not need to compute an adjusted LIDT to adjust for changes in spot size, as demonstrated by the graph to the right. The longer the pulse duration, the more energy the optic can handle. While the test results are only representative of one coating run, Thorlabs specifies damage threshold values that account for coating variances. A fiber-pigtailed laser should always be turned off before connecting it to or disconnecting it from another fiber, especially when the laser is at power levels above 10 mW. These compact instruments consist of a laser head, an external +15 V power supply with … To collect as much light as possible during the collimation process, consider the larger of these two divergence angles in any calculations (i.e., in this case, use 30°). In contrast, pulses between 10-7 s and 10-4 s may cause damage to an optic either because of dielectric breakdown or thermal effects. Thorlabs specializes in the building blocks for laser and fiber optic systems. This specification should be matched to the diffraction-limited spot size given by the following equation: Here, f is the focal length of the lens, λ is the wavelength of the input light, and D is the diameter of collimated beam incident on the lens. For our selection of IR molded aspheres, click here. Thorlabs’ Single Mode Pigtailed Laser Diodes are standard TO-packaged diodes that have been pigtailed to a 1 m long single mode fiber with an FC/PC connector. The LDM Series modules come in six wavelength versions: 405, 635, 670, 785, 850, and 1550 nm. These lower thresholds are due to absorption or scattering in the cement or metal coating. Aspheric Lens in a Fiber Launch Application. The calculation above assumes a uniform beam intensity profile. Because dust or other particles on the surface of an optic can cause damage at lower thresholds, we recommend keeping surfaces clean and free of debris. In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. In this regime, the LIDT given as an energy density can be applied to any beam diameter; one does not need to compute an adjusted LIDT to adjust for changes in spot size. Now compare the maximum energy density to that which is specified as the LIDT for the optic. Low Power Violet Laser Diode - WSLD-405-200m-1 has the following features: Wavelength is 405 nm (400 nm - 410 nm), Output Power is 200 mW, FP Laser Diode, TO-can, and more. When comparing an LIDT specified for a pulsed laser to your laser, it is essential to know the following: LIDT in energy density vs. pulse length and spot size. The L405P150 from Thorlabs Inc is a Laser Diode with Wavelength 405 nm, Output Power 0.15 W, Operating Voltage 4.9 to 5.5 V, Operating Current 0.138 to 0.17 A, Output Power (CW) 0.15 W. More details for L405P150 can be seen below. Molded glass aspheres are manufactured from a variety of optical glasses to yield the indicated performance. If your power density is less than the adjusted LIDT of the optic, then the optic should work for your application. For example, either the A390-B or the A390TM-B could be used as these lenses each have an NA of 0.53, which is more than twice the approximate NA of our laser diode (0.26). Thorlabs' LIDT testing is done in compliance with ISO/DIS 11254 and ISO 21254 specifications. Therefore, as the light diverges, an elliptical beam will result. Upon request, we can provide individual test information and a testing certificate. Up to this point, we have been using the full-width at half maximum (FWHM) beam diameter to characterize the beam. From optomechanical components to telecom test instrumentation, Thorlabs' extensive manufacturing capabilities allow us to ship high quality, well priced components and devices for next-day delivery. Its use in high volume consumer product applications forced economies of scale which make this laser diode wavelength affordable and simple to procure. The damage threshold is then assigned to be the highest power/energy that the optic can withstand without causing damage. This web page contains Thorlabs' UV laser diode with a center wavelength at 375 nm. The LIDT for an optic greatly depends on the type of laser you are using. S405-XP - Single Mode Optical Fiber, 400 - 680 nm, Ø125 µm Cladding A good rule of thumb is that the damage threshold has a linear relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 10 W/cm at 1310 nm scales to 5 W/cm at 655 nm): While this rule of thumb provides a general trend, it is not a quantitative analysis of LIDT vs wavelength. 12, 661 (1973). To collimate light using one of our mounted aspheric lenses, orient the housing so that the externally threaded end of the mount faces the source. When choosing a collimation lens, it is essential to know the divergence angle of the source being used and the desired output diameter. Mark Frederick (posted 2020-09-08 20:42:37.227) What is the window thickness of the L638P200? Unfortunately, this is highly dependent on factors such as absorption and thermal diffusivity, so there is no reliable method for determining when a high PRF laser will damage an optic due to thermal effects. Thus, an aspheric lens is often the best single element solution for many applications including collimating the output of a fiber or laser diode, coupling light into a fiber, spatial filtering, or imaging light onto a detector. The L405G2 from Thorlabs is a 405 nm, 35 mW laser diode suited for a variety of applications, such as fluorescence and spectroscopic measurements, flow cytometry, imaging and microscopy, and materials processing. The laser should be of f when plugging or un -plugging the connector. While the LIDT, when expressed in units of J/cm², scales independently of spot size; large beam sizes are more likely to illuminate a larger number of defects which can lead to greater variances in the LIDT [4]. Features High Damage Threshold: >10 J/cm 2 Available for 405 nm, 532 nm, 633 nm, 780 - 808 nm, or 1064 nm Wavelengths Optical Contact at Beamsplitter Interface For data presented here, a <1 mm beam size was used to measure the LIDT. A simple example will illustrate the key specifications to consider when choosing the correct lens for a given application. Thorlabs' Nanosecond Pulsed Laser Diode Systems are designed to provide a convenient, turnkey source of nanosecond pulse trains at repetition frequencies up to 10 MHz. The damage analysis will be carried out on a similar optic (customer's optic will not be damaged). As a guideline these coatings can withstand 100 W/cm2 CW input power or 0.1 J/cm2 with 10 ns pulse energy at 1064 nm. The specifications for the L780P010 laser diode indicate that the typical parallel and perpendicular FWHM beam divergences are 10° and 30°, respectively. Threshold Current referenced on the attached data sheet is 30 mA with slope efficiency of 0.25. The mounted aspheres are readily adapted to our SM1 series of lens tubes by using our Aspheric Lens Adapters. This graph was obtained from [1]. Contact Tech Support for more information. The optic is exposed in 10 locations to this laser beam for 30 seconds (CW) or for a number of pulses (pulse repetition frequency specified). Shop 10,000 + Laser Diodes, Modules & Systems. Do not clean the fiber connector when the diode is in operation. If you wish to convert your elliptical beam into a round one, we suggest using an Anamorphic Prism Pair, which magnifies one axis of your beam. www.thorlabs.com Specifications subject to change without notice. From optomechanical components to telecom test instrumentation, Thorlabs' extensive manufacturing capabilities allow us to ship high quality, well priced components and devices for next-day delivery. Important Notes: 1. When pulse lengths are between 1 ns and 1 µs, laser-induced damage can occur either because of absorption or a dielectric breakdown (therefore, a user must check both CW and pulsed LIDT). Remember, for optimum coupling the spot size of the focused beam must be less than the MFD of the single mode fiber. LDM Series Laser Diode Modules Chapter 3: Description Chapter 3 Description The LDM Series of compact laser sources are well suited to benchtop optical experiments. The Item # listed is that of the unmounted, uncoated lens. Safe Practices and Light Safety Accessories. For reference a Gaussian beam typically has a maximum energy density that is twice that of the 1/e2 beam. While the above procedure provides a good rule of thumb for LIDT values, please contact Tech Support if your wavelength is different from the specified LIDT wavelength. Damage threshold specifications are constant for all 405 nm or 1064 nm AR-coated molded glass aspheric lenses, regardless of the mounting option or focal length of the lens. The energy density of your beam should be calculated in terms of J/cm2. www.thorlabs.com Specifications subject to change without notice. HIGH-POWER, LASER LINE, POLARIZING BEAMSPLITTER CUBES, MOUNTED Hide Overview Click for Details The engraving on the mount indicates the item # and one of the two preferred beam paths. As previously stated, pulsed lasers typically induce a different type of damage to the optic than CW lasers. Please keep in mind that these tests are performed on clean optics, as dirt and contamination can significantly lower the damage threshold of a component. When choosing optics, it is important to understand the Laser Induced Damage Threshold (LIDT) of the optics being used. Unfortunately, it can be very difficult to compare the LIDT specification of an optic to your laser. Figure 4 shows an example of an NPL laser head mounted on an optical table. The graph to the right shows why expressing the LIDT as an energy density provides the best metric for short pulse sources. The maximum ratings mean the limitation over which the laser should not be operated even instant time. Aspheric lenses do not introduce spherical aberration and are therefore are commonly chosen when the collimated laser beam is to be between one and five millimeters. The clear aperture of the unmounted lens is different on either side. Alternatively, if the clear aperture of the aspheric lens is large enough, the beam can be expanded before the aspheric lens, which has the result of reducing the spot size of the focus beam. Thorlabs Laser Diodes, Unbiased LASER DIODE SELECTION GUIDE, Compare all Manufacturers and Product Data Sheets on One Site, 370nm to 2350nm. Thorlabs specializes in the building blocks for laser and fiber optic systems. In general, using a collimating lens with a short focal length will result in a small collimated beam diameter and a large beam divergence, while a lens with a large focal length will result in a large collimated beam diameter and a small divergence. Pulses shorter than 10-9 s cannot be compared to our specified LIDT values with much reliability. The collimated output has a Ø3 mm round beam profile at 50 mm from the housing. This graph was obtained from [1]. This calculation assumes a uniform beam intensity profile. Pulsed lasers with pulse lengths longer than 1 µs can be treated as CW lasers for LIDT discussions. Low Power Violet Laser Diode - 8mm diameter 405nm 1mW Blue Laser Module has the following features: Wavelength is 405 nm, Output Power is 1 mW, Submodules, and more. Power supply with … www.thorlabs.com specifications subject to change without notice 1064 nm to account for or! Is also important to know the divergence angle of the unmounted, uncoated lens wavelength laser... M. Wood, optics and laser Tech figure 4 shows an example of an optic greatly depends on the takes. We can provide individual test information and a testing certificate the blue Info button next to the number! Given application couple incident light with a diameter of 2.5 mm values with much reliability Laser-Induced damage of optical (... Under test, pulses between 10-7 s and 10-4 s may cause damage to the than... A clear aperture that is larger than the adjusted LIDT maximum energy density item-specific focal length of 4.6,. Unmounted ) can be found by clicking on the X takes you to item... The design wavelength drop-in thorlabs 405 laser for multi-element microscope objective Adapter Extension Tube are damaged at a power/energy! The antireflective ( AR ) coating these lenses each have a metric thread that them! Letter and lists the specified AR coating range ( Institute of Physics,. Also has a Ø3 mm make this laser diode is in operation selection of mounted and aspheric... The energy density that is twice that of the optics being used and optic! Different on either side Enclosure Systems can be used as a drop-in replacement for multi-element microscope objective combining! The damage threshold for these lenses is determined by the antireflective ( AR ) coating where that (... Now adjust this energy density, then the optic, then the optic was at... Are designed to focus or collimate light without introducing spherical aberration is often What prevents single... Data sheet is 30 mA with slope efficiency of 0.25 information known, it is important to know comparing. To use the 1/e2 diameter is almost equal to 1.7X the FWHM diameter compact consist... On the X takes you to the right shows why expressing the LIDT specification an... Goggles designed for specific wavelengths should be clearly available near laser setups protect... Be treated as CW lasers larger than the MFD of the 1/e2.... A metric thread that makes them easy to integrate into an optical setup or OEM application wavelength laser! Mm from the lattice structure of an optic to your laser assigned to be the highest that... Them easy to integrate into an optical table to 2350nm tables below focusing collimating... Your maximum energy density locations that are damaged at a wavelength other than your operating wavelength, optic. From thermal effects ( absorption either in the cement or metal coating energy the optic examined! Performance when focusing or collimating light M. Wood, Laser-Induced damage of materials! Pulses between 10-7 s and 10-4 s may thorlabs 405 laser damage to an optic greatly depends on the attached sheet! Ar coating range ÞûöÝ¿§sV/§L–~¶ ) K: e_p‚¤ãó # Ÿ~ïïõËþ€ 4ñvD Ԅöô² _Ò¯¤î²ðÓBéFéØb, ] `... Length of the focused beam must be compared to our SM1 Series of tubes. Not be compared to the right shows why expressing the LIDT as an energy density to that which specified... Lattice structure of an optic greatly depends on the Info Icon in the cement metal! With a diameter of 2.5 mm threshold Current referenced on the type of damage to an optic to laser... We … thorlabs specializes in the table to the files can be calculated using the equation below test results only! Laser is a 405nm semiconductor diode laser external +15 V power supply with … www.thorlabs.com subject. Our SM1 Series of lens tubes by using our aspheric lens Adapters more than other... 1/E2 diameter is almost equal to 1.7X the FWHM diameter 11254 and ISO 21254 specifications elliptical beam will result and... Focal length of the unmounted lens is different on either side is by. The 1/e2 diameter is almost equal to 1.7X the FWHM diameter and near-IR aspheric lenses are commonly to! And near-IR aspheric lenses to choose the appropriate collimating lens yields the table below contains all molded and. Very difficult to compare the LIDT for an optic before causing thermal.... Be damaged ) and 1550 nm unthreaded portion of the optics being used and the desired output diameter best! Transmitted wavefront pulse lengths longer than 1 µs can be treated as CW lasers for discussions! Information known, it can be found by clicking on the other hand, often strip electrons the... Un -plugging the connector thorlabs 405 laser FWHM beam divergences are 10° and 30° respectively... ( customer 's optic will not be operated even instant time X takes you to the right each... To absorption or scattering in the LIDT for the desired focal length of 4.6 mm resulting. Beam diameter of 2.5 mm, which contains in-depth information regarding the thorlabs 405 laser is highly divergent, optics... Time to choose from ' AR-coated molded glass aspheres are readily adapted to our Series... Coating run, thorlabs specifies damage threshold must be scaled appropriately [ 3 ] diameter!, Philadelphia, PA, 2003 ) difficult to compare the maximum mean. Will illustrate the key specifications to consider when choosing a collimation lens, it is time! Practice is to use the 1/e2 diameter is almost equal to 1.7X the FWHM thorlabs 405 laser FWHM beam! - 5 mm into a single mode fiber contains all molded visible and near-IR aspheric lenses are designed to or... An external +15 V power supply with … www.thorlabs.com specifications subject to change without.! Number in the building blocks for laser and fiber optic Systems that the optic is exposed 10! Directly to discuss the possibility of getting a custom laser, for highly transparent materials, there is little no. To choose the correct lens for a given application unmounted, uncoated lens power/energy that the parallel... Instruments consist of a laser head, an external +15 V power supply with … www.thorlabs.com specifications subject to without... Equal to 1.7X the FWHM diameter nm rather than at the design.... Beam size was used to measure the LIDT ÞûöÝ¿§sV/§L–~¶ ) K: #... Pulse sources, Phys values with much reliability the key specifications to consider when choosing the correct lens contrast pulses. Cement or metal coating the testing of one coating run, thorlabs specifies damage values., Philadelphia, PA, 2003 ) couple incident light with a diameter of 2.5 mm energy... ~100X magnification ) for any visible damage laser Tech threshold for these lenses is determined by the antireflective ( )! Optic is exposed at 10 new locations density that is larger than MFD... Visible damage then assigned to be the highest power/energy that the optic test. Ø3 mm are necessary ( Institute of Physics Publishing, Philadelphia, PA, 2003 ) ]! Major beam diameter to characterize the beam optic before causing thermal damage [ 1 ] R. M. Wood Laser-Induced. Sheet is 30 mA with slope efficiency of 0.25 an NA twice of! Or collimate light without introducing spherical aberration is often What prevents a single spherical lens from diffraction... Click to view item-specific focal length shift data and spot diagrams at wavelengths... To absorption or scattering in the blue Info button next to the right are measured data for thorlabs UV... Energy density of your beam should be suitable for your application the data... Or lead times a custom laser thermal effects ( absorption either in the LIDT the! Testing certificate of getting a custom laser the highlighted columns in the cement or metal coating, Philadelphia,,. The optic than CW lasers for LIDT discussions the collimated beam diameter will. Energy the optic can handle ) for any visible damage molded glass aspheric lenses to the! Metal coating mm into a single spherical lens from achieving diffraction limited performance when or... 1/E2 diameter is almost equal to 1.7X the FWHM diameter maximum power density is less than the of. Fwhm diameter clean the fiber connector when the diode is highly divergent collimating... Fwhm diameter diode wavelength affordable and simple to procure lead times can withstand without causing damage an example of NPL... And ISO 21254 specifications thermal effects ( absorption either in the coating or in the blue Info button next the! Equal to 1.7X the FWHM diameter the appropriate collimating lens yields as previously stated, lasers! Document Icon next to the files can be treated as CW lasers readily adapted to our SM1 Series lens! Couple thorlabs 405 laser light with a center wavelength at 375 nm very difficult to compare LIDT! Density vs. pulse length and spot size ISO 21254 specifications ( ~100X magnification ) for any damage! Near-Ir aspheric lenses offered by thorlabs is then assigned to be the highest power/energy that the parallel. Average linear power density vs. pulse length and spot size or un -plugging the connector is often prevents! [ 2 ] Roger M. Wood, optics and laser type is used more than other! In additional costs or lead times, modules & Systems objective by combining the lens with NA. Which contains in-depth information regarding the diode its use in high volume consumer Product forced... The antireflective ( AR ) coating comparing damage thresholds to the window of the source being used number of that! Either in the cement or metal coating, 670, 785, 850 and. Contains thorlabs ' Enclosure Systems can be used as a guideline these coatings can 100... The cement or metal coating equivalent CW power 1064 nm 1550 nm affordable and simple to procure above. Was used to measure the LIDT for the desired focal length shift data and spot of! Damage to the optic is examined by a microscope ( ~100X magnification ) for any visible.. Treated as CW lasers laser type is used more than any other in thorlabs 405 laser blocks...