The battle of eye-safe laser crystals, Yb:Er:glass and Tm:YAG, is not much a battle as It is just a complementary marriage. Equally crystals offer exceptional pros, and their range is determined by the specified software.
In length measurement, For example, the large optical acquire of Yb:Er:glass allows for the production of extreme laser beams that will travel long distances without having important attenuation.
We report on the higher ordinary ability and large repetition price 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 very carefully selected two-composite-laser-crystal configuration, the completely optimized gate-open time of acousto-optic modulator along with the ingeniously created U-formed resonator, considerable electricity and effectiveness enhancements and also exceptional manner matching are already enabled.
: Thulium-doped components are very efficient, offering superior output electrical power with nominal input Vitality. Their operational wavelength guarantees safety, building them suited to programs like distant sensing and laser radar programs.
For environmental checking, the emission wavelength of Yb:Er:glass will come into Engage in. As this wavelength coincides While using the low-absorption window from the ambiance, it permits the transmission of laser beams over long distances devoid of significant absorption by atmospheric constituents. This residence is invaluable in applications like air quality checking and atmospheric experiments.
Enhancement of steadiness and efficiency in diode-pumped passively Q-switched intracavity optical parametric oscillator by using a monolithic cavity
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Whenever we communicate of Yb:Er:glass, we consult with a laser crystal that principally operates in an eye-safe spectral location of all around one.5 µm. This wavelength area doesn’t just show up eye-catching around the surface area; it carries major implications to get a big selection of purposes.
The one.five µm wavelength area is particularly intriguing because it coincides with the least water absorption in biological tissue. This attribute makes Yb:Er:glass an excellent option for biomedical apps, where it’s essential to reduce opportunity tissue harm.
Figure five(a) exhibits the pulse width and peak electrical power of the next-Stokes laser as being a function of your incident pump energy at fifty kHz. The heartbeat width is less than 2 ns and it decreases with the growing pump depth. The heart beat width may be as slender as one.1 ns at 27.two W, that's noticeably shortened when compared to that of the fundamental laser and will be largely attributed on the Raman pulse compression[fifteen]. On top of that, the cascaded Raman process may additionally increase the outcome of the heartbeat compression[forty three]. Moreover, these a brief pulse width might also have arisen from your shorter Raman cavity, that can decrease the round excursion time of your Stokes photons and make click here the Develop-up with the Stokes laser pulse speedier. Correspondingly, the peak power of only one pulse reaches as many as 40 kW. This is the optimum peak electrical power at any time noted for your eye-safe diamond Raman lasers to the most beneficial of our knowledge. The standard output electric power and peak electricity as a operate of the PRF are proven in Fig.
The 1.five µm wavelength region is especially fascinating mainly because it coincides While using the bare minimum water absorption in Organic tissue. This attribute tends to make Yb:Er:glass a really perfect option for biomedical apps, where it’s required to lower prospective tissue problems.
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In protection and security functions, eye-safe lasers play a vital job in ranging and focus on designation devices, in addition to in non-lethal deterrent devices. Their deployment ensures the safety of operators and bystanders, minimizing the potential risk of accidental accidents.
It’s vital that you do not forget that the wavelength of one.5 µm is only one aspect of Yb:Er:glass. Coupled with other special properties including broad attain bandwidth, substantial quantum efficiency, and temperature security, Yb:Er:glass exhibits superb overall functionality in many apps, the two regarding performance and safety.
Beyond these, the emission wavelength of Tm:YAG can also be beneficial in health-related programs, specially in laser operation.