thorlabs 405 laser

Figure 4 shows an example of an NPL laser head mounted on an optical table. Thorlabs' Enclosure Systems can be used to contain optical setups to isolate or minimize laser hazards. After exposure, the optic is examined by a microscope (~100X magnification) for any visible damage. As previously stated, pulsed lasers typically induce a different type of damage to the optic than CW lasers. 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. These lenses each have a focal length of 4.6 mm, resulting in an approximate major beam diameter of 2.5 mm. 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. www.thorlabs.com Specifications subject to change without notice. Next, the power/energy is either increased or decreased and the optic is exposed at 10 new locations. Thorlabs specializes in the building blocks for laser and fiber optic systems. 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. Solving for the desired focal length of the collimating lens yields. Remember, for optimum coupling the spot size of the focused beam must be less than the MFD of the single mode fiber. 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). The graph to the right shows why expressing the LIDT as an energy density provides the best metric for short pulse sources. Low Power Violet Laser Diode - LP405-SF10 has the following features: Wavelength is 405 nm (395 nm - 415 nm), Output Power is 10 mW, FP Laser Diode, TO-can, and more. This graph was obtained from [1]. Pigtailed Laser Diode, SMF from Thorlabs. For beams with a high PRF both the average and peak powers must be compared to the equivalent CW power. Example:Fiber: P1-630A-FC-2Collimated Beam Diameter Prior to Lens: Ø3 mm. Molded glass aspheres are manufactured from a variety of optical glasses to yield the indicated performance. The damage threshold is then assigned to be the highest power/energy that the optic can withstand without causing damage. Therefore, as the light diverges, an elliptical beam will result. Opt. 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. www.thorlabs.com Specifications subject to change without notice. A simple example will illustrate the key specifications to consider when trying to choose the correct lens. This process is repeated until damage is observed. This graph was obtained from [1]. The laser should be of f when plugging or un -plugging the connector. 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). If the optic was tested at a wavelength other than your operating wavelength, the damage threshold must be scaled appropriately [3]. Please visit the landing page for more details. 12, 661 (1973). 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. I have reached out to you directly to discuss the possibility of getting a custom laser. [1] R. M. Wood, Optics and Laser Tech. For data presented here, a <1 mm beam size was used to measure the LIDT. Thorlabs offers a large selection of mounted and unmounted aspheric lenses to choose from. Operating current at 10 mW for this 405nm laser … All of these molded glass lenses are also available premounted in non-magnetic 303 stainless steel lens cells that are engraved with the part number for easy identification. Assuming a divergence angle of 30° (FWHM) and desired beam diameter of 3 mm: Note that the focal length is generally not equal to the needed distance between the light source and the lens. As a result, if an aspheric lens is not available that provides an exact match, then choose the aspheric lens with a focal length that is shorter than the calculation above yields. 3. Pulsed lasers, on the other hand, often strip electrons from the lattice structure of an optic before causing thermal damage. Continuous wave (CW) lasers typically cause damage from thermal effects (absorption either in the coating or in the substrate). [3] C. W. Carr et al., Phys. Additionally, for highly transparent materials, there is little to no drop in the LIDT with increasing PRF. 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. Important Notes: 1. ... Popular λ: View Only 405 nm Laser Diodes; Popular λ: View Only 488 nm Laser Diodes; 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 reference, a Gaussian beam typically has a maximum power density that is twice that of the uniform beam (see lower right). More details for TC12FC-405 can be seen below. 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). 405nm Blue Laser Diode Definition : The most common blue laser is a 405nm semiconductor diode laser. Product Specifications EFL is specified at 405 nm rather than at the design wavelength. 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°). Keep in mind that this calculation is only used for pulses between 10-9 s and 10-7 s. For pulses between 10-7 s and 10-4 s, the CW LIDT must also be checked before deeming the optic appropriate for your application. A histogram such as that below represents the testing of one BB1-E02 mirror. Clicking on the X takes you to the landing page where that lens (mounted or unmounted) can be purchased. Mounted aspheres can be used as a drop-in replacement for multi-element microscope objective by combining the lens with our Microscope Objective Adapter Extension Tube. The working distance is specified at the design wavelength and is measured from the lens to the window of the laser diode being collimated (not the emission point). In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. Note that the guideline presented here assumes room temperature operation and optics in new condition (i.e., within scratch-dig spec, surface free of contamination, etc.). Thorlabs specializes in the building blocks for laser and fiber optic systems. Beam diameter is also important to know when comparing damage thresholds. 29, 517 (1998). Click to view item-specific focal length shift data and spot diagrams at various wavelengths. 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. This working distance is measured from the lens to the window of the laser diode being collimated (not the emission point). Specific material properties for each lens can be found by clicking on the Info Icon in the tables below and selecting the Glass tab. ¾|Rö×ØZOµÝÿóÕßë]ûýrÖ¹cA¬.Jû1er³Tÿ?ÞûöÝ¿§sV/§L~¶)K:e_p¤ãó#~ïïõËþ4ñvD Ôöô² _Ò¯¤î²ðÓBéFéØb,]`¤~íJê×gJ¡½0ô*ÓsìÉXQËò1¦zß9¸ òðÇæïÀ½BÖ_¿ËÔÊÄärÜ_Éß~GYtB. There are multiple regimes in which a pulsed laser can damage an optic and this is based on the laser's pulse length. The mounted aspheres are readily adapted to our SM1 series of lens tubes by using our Aspheric Lens Adapters. Rev. The table below contains all molded visible and near-IR aspheric lenses offered by Thorlabs. Threshold Current referenced on the attached data sheet is 30 mA with slope efficiency of 0.25. Aspheric Lens in a Fiber Launch Application. For beams sizes greater than 5 mm, the LIDT (J/cm2) will not scale independently of beam diameter due to the larger size beam exposing more defects. When choosing optics, it is important to understand the Laser Induced Damage Threshold (LIDT) of the optics being used. The following is a general overview of how laser induced damage thresholds are measured and how the values may be utilized in determining the appropriateness of an optic for a given application. 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. 91, 127402 (2003). Upon request, we can provide individual test information and a testing certificate. Shop 10,000 + Laser Diodes, Modules & Systems. These mounted aspheres have a metric thread that makes them easy to integrate into an optical setup or OEM application. While the test results are only representative of one coating run, Thorlabs specifies damage threshold values that account for coating variances. 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. The number of locations that are damaged at a particular power/energy level is recorded. Next, check to see if the numerical aperture (NA) of the diode is smaller than the NA of the lens: 0.30 = NALens > NADiode ≈ sin(15°) = 0.26. If your power density is less than the adjusted LIDT of the optic, then the optic should work for your application. 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. Each USB-equipped laser module has collimated output at 520 or 635 nm, an on/off switch, and a built-in highly attenuating electrical filter to eliminate noise in the laser output, regardless of the power supply used. Thorlabs specializes in the building blocks for laser and fiber optic systems. You must now consider hotspots in the beam or other non-uniform intensity profiles and roughly calculate a maximum power density. Contact Tech Support for more information. The specifications to the right are measured data for Thorlabs' AR-coated molded glass aspheric lenses. 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. The maximum ratings mean the limitation over which the laser should not be operated even instant time. 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). LIDT in linear power density vs. pulse length and spot size. The specifications for the L780P010 laser diode indicate that the typical parallel and perpendicular FWHM beam divergences are 10° and 30°, respectively. A simple example will illustrate the key specifications to consider when choosing the correct lens for a given application. The damage threshold for these lenses is determined by the antireflective (AR) coating. While many optics can handle high power CW lasers, cemented (e.g., achromatic doublets) or highly absorptive (e.g., ND filters) optics tend to have lower CW damage thresholds. Absorption is either due to an intrinsic property of the optic or due to surface irregularities; thus LIDT values are only valid for optics meeting or exceeding the surface quality specifications given by a manufacturer. The LP405-SF30 from Thorlabs Inc is a Laser Diode with Wavelength 405 nm, Output Power 0.3 W, Operating Voltage 5 to 6.5 V, Operating Current 0.1 to 0.15 A, Output Power (CW) 0.3 W. More details for LP405-SF30 can be seen below. Up to this point, we have been using the full-width at half maximum (FWHM) beam diameter to characterize the beam. The table to the right defines each letter and lists the specified AR coating range. The 1/e2 beam diameter therefore captures more of the laser diode's output light (for greater power delivery) and minimizes far-field diffraction (by clipping less of the incident light). These lower thresholds are due to absorption or scattering in the cement or metal coating. For this application, the ideal lens is a molded glass aspheric lens with focal length near 5.6 mm and our -B antireflection coating, which covers 780 nm. Aspheric lenses are commonly chosen to couple incident light with a diameter of 1 - 5 mm into a 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. 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