EYE SAFE LASER CRYSTAL Secrets
EYE SAFE LASER CRYSTAL Secrets
Blog Article
In summary, we achieved a 1485 nm eye-safe intra-cavity diamond cascaded Raman laser with high peak electrical power and slim linewidth. Benefitting from the use of composite crystal and in-band pumping and The nice manner matching provided by the V-formed folded cavity, the device obtained a mean output electric power of 2.
The battle of eye-safe laser crystals, Yb:Er:glass and Tm:YAG, is not really a lot of a fight as It is just a complementary romance. Each crystals offer distinctive benefits, and their selection is determined by the desired application.
Eye-safe lasers, given that the phrase indicates, are lasers particularly engineered to reduce the prospective hazards to your human eye, a crucial and fragile organ liable to different kinds of injury.
These crystals are deemed ‘eye-safe�?because their emission wavelengths fall in the region that considerably reduces possible eye hazards affiliated with laser programs.
A LED-array-pumped Nd:YAG laser with optical conversion effectiveness up to 20.2% is demonstrated by immediate side-pumping with no coupling lens by utilizing the productive pump plan.
Take note: This part is routinely generated by AI . The website and System operators shall not be accountable for any commercial or legal implications arising from a use of AI produced material on this Web site. Please pay attention to this.
This aspect of significant optical acquire not only allows for a sturdy effectiveness but additionally encourages effectiveness. The significantly less Electricity required to produce a potent laser beam, the greater source-productive the laser program gets to be.
On the other hand, it’s vital to do not forget that the phrase “eye-safe�?is relative and never complete. Though the potential risk of retinal injury is decreased Using these lasers, they are able to even now lead to ocular hurt, specifically at large power levels or with prolonged publicity.
The defining characteristic of those lasers is their operational wavelength, which usually falls throughout the one.four to 2 micrometers vary. This spectrum is often generally known as the “eye-safe�?location mainly because of the exceptional way in which the human eye responds to those specific wavelengths.
Figure 5(a) shows the pulse width and peak electrical power of the 2nd-Stokes laser like a operate with the incident pump energy at 50 kHz. The heart beat width is a lot less than two ns and it decreases Along with the growing pump intensity. The pulse width could be as slender as one.1 ns at 27.2 W, which happens to be noticeably shortened in comparison with that of the elemental laser and will be mainly attributed to the Raman pulse compression[15]. Additionally, get more info the cascaded Raman system may improve the result of the pulse compression[43]. Additionally, this kind of a short pulse width might also have arisen in the shorter Raman cavity, which is able to reduce the spherical excursion time in the Stokes photons and make the Develop-up of the Stokes laser pulse a lot quicker. Correspondingly, the height ability of one pulse reaches up to forty kW. This can be the greatest peak electric power ever claimed for your eye-safe diamond Raman lasers to the very best of our knowledge. The standard output power and peak power like a operate from the PRF are shown in Fig.
Superior ordinary electric power and high repetition rate eye-safe Raman laser pushed by a two-crystal Nd:YVO4 laser
Relocating on to Tm:YAG, the narrative shifts a little bit. This laser crystal incorporates a dominant emission line during the vicinity of 2.0 µm, a variety that is definitely also regarded as eye-safe. Nevertheless, it’s the distinctive Attributes affiliated with this individual wavelength that truly set Tm:YAG aside.
We existing an stop-pumped steady-wave intra-cavity yellow Raman laser at 590 nm with a sixty mm extensive pure crystal SrWO4 and an intra-cavity LiB3O5 frequency doubling crystal. The very best output electricity…
In addition, this outstanding electricity handling means also contributes to the lengthy operational everyday living and dependability of Tm:YAG crystals.
In addition, the particular absorption attributes of eye-safe lasers are actually leveraged in healthcare applications to focus on and deal with specific tissues without the need of harmful the encompassing spots.