EYE SAFE LASER CRYSTAL No Further a Mystery
EYE SAFE LASER CRYSTAL No Further a Mystery
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This element of significant optical achieve not only permits a strong overall performance but also encourages efficiency. The considerably less Electricity required to make a strong laser beam, the greater source-effective the laser system will become.
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We report on a large common energy and significant repetition fee nanosecond pulsed eye-safe KGW Raman laser intracavity pushed by an acousto-optic Q-switched 1342 nm two-crystal Nd:YVO4 laser. Getting advantages of the thoroughly chosen two-composite-laser-crystal configuration, the totally optimized gate-open up time of acousto-optic modulator and also the ingeniously intended U-shaped resonator, significant electric power and effectiveness enhancements along with exceptional mode matching have already been enabled.
Relocating on to Tm:YAG, the narrative shifts a little. This laser crystal incorporates a dominant emission line inside the vicinity of two.0 µm, a spread that is also regarded as eye-safe. However, it’s the exceptional properties affiliated with this unique wavelength that really established Tm:YAG apart.
For environmental checking, the emission wavelength of Yb:Er:glass arrives into Enjoy. As this wavelength coincides Together with the very low-absorption window in the ambiance, it permits the transmission of laser beams above very long distances without major absorption by atmospheric constituents. This house is priceless in purposes such as air high-quality monitoring and atmospheric studies.
We report on a substantial common energy and substantial repetition level nanosecond pulsed eye-safe KGW Raman laser intracavity driven by an acousto-optic Q-switched 1342 nm two-crystal Nd:YVO4 laser. Using advantages of the thoroughly chosen two-composite-laser-crystal configuration, the completely optimized gate-open time of acousto-optic modulator and the ingeniously intended U-shaped resonator, significant power and effectiveness enhancements in addition to exceptional manner matching are enabled.
For example, the for a longer time wavelengths of website eye-safe lasers could cause harm to the cornea or maybe the lens because of absorption. Thus, suitable safety steps and recommendations ought to nevertheless be adopted diligently when managing and operating these lasers.
Having said that, it’s crucial to remember that the expression “eye-safe�?is relative rather than complete. Though the risk of retinal personal injury is decreased Using these lasers, they are able to nevertheless trigger ocular damage, particularly at large electricity stages or with extended exposure.
A person Principal software is wind velocity measurement. Higher-electricity LIDAR techniques employing Tm:YAG crystals can undertaking laser beams to large altitudes to evaluate wind velocity and way with spectacular accuracy.
Figure two(b) reveals the fundamental laser beam radius on each the Nd:YVO4 and the diamond below distinctive thermal lens focal lengths. In the situation of the thermal lens having a focal duration as smaller as one hundred seventy mm, the cavity is ready to take care of a effectively-matched romantic relationship in between the pump and the fundamental laser.
Higher ordinary energy and significant repetition rate eye-safe Raman laser driven by a two-crystal Nd:YVO4 laser
Transferring on to Tm:YAG, the narrative shifts marginally. This laser crystal contains a dominant emission line inside the vicinity of two.0 µm, a spread that may be also regarded as eye-safe. However, it’s the exceptional Qualities linked to this specific wavelength that actually established Tm:YAG aside.
On this letter, utilizing a chemical-vapor-deposition grown diamond as Raman attain medium and a 1080 nm fiber laser as pump supply, we report a steady-wave second-Stokes Raman laser with emission…
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Eye Safe Laser Crystal Module The destruction threshold for human eye is large every time a laser having a wavelength increased than one.four um, simply because when it truly is irradiated to your human eye, the majority of its mild depth is absorbed with the vitreous overall body, so it is not simple to damage the retina at a certain electricity.( Getting the 1.57um laser as an example, according to the US national stability criteria, its safe publicity to human eye is 400 thousand occasions that from the one.06um Nd:YAG laser presently used.