EYE SAFE LASER CRYSTAL Things To Know Before You Buy
EYE SAFE LASER CRYSTAL Things To Know Before You Buy
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In summary, we realized a 1485 nm eye-safe intra-cavity diamond cascaded Raman laser with significant peak ability and narrow linewidth. Benefitting from using composite crystal and in-band pumping and The great manner matching furnished by the V-formed folded cavity, the machine obtained an average output electricity of two.
One particular Key software is wind velocity measurement. Superior-energy LIDAR systems applying Tm:YAG crystals can undertaking laser beams to significant altitudes to evaluate wind velocity and direction with remarkable accuracy.
Like Yb:Er:glass, Tm:YAG doesn’t entirely rely upon its emission wavelength to glow. It's also recognized for its large thermal conductivity and very good mechanical Attributes, enabling it to resist superior-power operations and performance reliably in a wide range of ailments.
A non-critically period matched KTA optical parametric oscillator intracavity pumped by an actively Q-switched Nd:GYSGG laser with dual signal wavelengths
These crystals allow researchers to obtain correct knowledge in regards to the drinking water vapor profile from the ambiance, which is critical for weather conditions prediction and local climate studies.
We report with a higher normal electricity and large repetition charge nanosecond pulsed eye-safe KGW Raman laser intracavity pushed by an acousto-optic Q-switched 1342 nm two-crystal Nd:YVO4 laser. Taking advantages of the very carefully selected two-composite-laser-crystal configuration, the extensively optimized gate-open up time of acousto-optic modulator along with the ingeniously developed U-shaped resonator, significant electrical power and effectiveness enhancements as well as remarkable method matching are already enabled.
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However, warning really should always be exercised to avoid potential dangers associated with superior electricity stages or prolonged publicity. By means of their relationship of functionality and safety, eye-safe lasers have expanded the horizons of laser apps, creating chances for safer and even more dependable use of the strong technological innovation.
The one.five µm wavelength region is especially fascinating as it coincides Using the bare minimum water absorption in biological tissue. This attribute helps make Yb:Er:glass a perfect choice for biomedical purposes, the place it’s necessary to decrease possible tissue injury.
Determine 5(a) displays the heartbeat width and peak energy of the second-Stokes laser to be a function from the incident pump electricity at fifty kHz. The pulse width is lower than two ns and it decreases Along with the raising pump intensity. The heart beat width might be as slender as 1.1 ns at 27.two W, that is substantially shortened when compared with that of the elemental laser and will be mostly attributed towards the Raman pulse compression[fifteen]. Moreover, the cascaded Raman procedure may increase the result of the pulse compression[43]. In addition, these kinds of a brief pulse width may also have arisen in the shorter Raman cavity, that may decrease the spherical journey time with the Stokes photons and make the Construct-up of your Stokes laser pulse more quickly. Correspondingly, the height electricity of just one pulse reaches approximately 40 kW. This is actually the greatest peak electric power ever described to the eye-safe diamond Raman lasers to the very best of our understanding. The normal output electric power and peak electric power being a function from the PRF are shown in Fig.
Right here, we proposed a V-formed folded cavity to achieve economical operation of an eye-safe intra-cavity diamond cascaded Raman laser. more info Around the one hand, the thermal influence of your laser crystal was mitigated mainly because of the utilization of composite crystal As well as in-band pumping, and Alternatively, the method matching and cavity stability are promoted because of the V-shaped folded cavity. Subsequently, an average output electric power of two.two W that has a diode to next-Stokes conversion efficiency of 8.one% has been efficiently attained. The heart beat width of the 2nd-Stokes laser was significantly minimized from sixty ns of the fundamental laser to one.1 ns due to Raman pulse compression, which resulted in a peak electric power of approximately 40 kW.
Moving on to Tm:YAG, the narrative shifts somewhat. This laser crystal includes a dominant emission line within the vicinity of 2.0 µm, a range that may be also looked upon as eye-safe. Nevertheless, it’s the one of a kind Homes connected with this unique wavelength that actually established Tm:YAG apart.
We current an conclusion-pumped continuous-wave intra-cavity yellow Raman laser at 590 nm using a 60 mm extensive pure crystal SrWO4 and an intra-cavity LiB3O5 frequency doubling crystal. The very best output electricity…
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Eye Safe Laser Crystal Module The problems threshold for human eye is superior each time a laser having a wavelength better than 1.four um, mainly because when it truly is irradiated into the human eye, nearly all of its gentle intensity is absorbed with the vitreous system, so It's not easy to wreck the retina at a certain ability.( Getting the one.57um laser as an example, based on the US national security expectations, its safe publicity to human eye is four hundred thousand periods that from the one.06um Nd:YAG laser currently utilized.