EYE SAFE LASER CRYSTAL Fundamentals Explained
EYE SAFE LASER CRYSTAL Fundamentals Explained
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An economical eye-safe laser source at 1500 nm based upon a novel Raman crystal BaTeMo2O9 (BTM) is shown for The 1st time. The laser source was produced with a 3rd get Stokes shift at…
Furthermore, this superior ability dealing with capacity also contributes towards the prolonged operational daily life and reliability of Tm:YAG crystals.
We report on the superior common electrical power and high repetition level nanosecond pulsed eye-safe KGW Raman laser intracavity driven by an acousto-optic Q-switched 1342 nm two-crystal Nd:YVO4 laser. Getting advantages of the meticulously selected two-composite-laser-crystal configuration, the comprehensively optimized gate-open up time of acousto-optic modulator plus the ingeniously intended U-shaped resonator, substantial energy and effectiveness enhancements and exceptional method matching have already been enabled.
Moving on to Tm:YAG, the narrative shifts a bit. This laser crystal incorporates a dominant emission line within the vicinity of two.0 µm, a variety that's also thought of as eye-safe. On the other hand, it’s the unique properties affiliated with this individual wavelength that really established Tm:YAG aside.
The strategy of emission wavelengths lies in the quite core of laser know-how, dictating quite a few parameters such as penetration depth, energy density, and safety measures. It’s no coincidence that Yb:Er:glass and Tm:YAG, two popular laser crystals, are famous for their eye-safe wavelengths.
We report with a high typical power and superior repetition rate nanosecond pulsed eye-safe KGW Raman laser intracavity pushed by an acousto-optic Q-switched 1342 nm two-crystal Nd:YVO4 laser. Having advantages of the thoroughly selected two-composite-laser-crystal configuration, the carefully optimized gate-open up time of acousto-optic modulator as well as ingeniously built U-formed resonator, considerable power and efficiency enhancements in addition to top-quality manner matching happen to be enabled.
This aspect of higher optical gain not just permits a sturdy performance but additionally encourages efficiency. The significantly less Strength required to produce a strong laser beam, the more resource-productive the laser technique will become.
Nonetheless, it’s important to keep in mind that the phrase “eye-safe�?is relative rather than complete. Even though the risk of retinal damage is diminished Using these lasers, they will however result in ocular damage, specially at higher electrical power levels or with prolonged publicity.
The 1.five µm wavelength location is especially intriguing since it coincides With all the minimal h2o absorption in Organic tissue. This attribute can make Yb:Er:glass a really perfect choice for biomedical applications, exactly where it’s essential to limit possible tissue harm.
Inspite of their name, the application of these lasers requires correct handling and care to avert likely dangers.
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By running at wavelengths that happen to be more unlikely to result in check here retinal personal injury, these lasers substantially decrease the potential risk of accidental eye hurt during operation, A vital feature looking at the sensitivity in the human eye plus the critical consequences of ocular accidents. This characteristic would make eye-safe lasers perfect for environments where laser use is prevalent, or in which the risk of unintentional eye publicity is superior.
We proposed and experimentally shown the era of substantial-electrical power 1176 nm Stokes wave by frequency shifting of a 885 nm diode-facet-pumped Nd:YAG laser utilizing a YVO4 crystal in a Z-formed cavity…
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Certainly one of the numerous characteristics of Yb:Er:glass is its substantial optical acquire. Effectively, Because of this a little enter of Vitality may lead to a significant output of laser mild.