In summary, we accomplished a 1485 nm eye-safe intra-cavity diamond cascaded Raman laser with higher peak energy and slender linewidth. Benefitting from the usage of composite crystal As well as in-band pumping and The great manner matching furnished by the V-formed folded cavity, the device attained a mean output electricity of two.
The struggle of eye-safe laser crystals, Yb:Er:glass and Tm:YAG, will not be a great deal of a battle as it is a complementary relationship. Both of those crystals give special strengths, and their assortment depends upon the desired application.
Despite the numerous strides in safety that eye-safe lasers have brought about, they aren't without their risks.
The efficiency and efficiency of any laser system are mostly dictated by its acquire parameters. Equally Yb:Er:glass and Tm:YAG demonstrate unique qualities In this particular factor, Every single leveraging its special characteristics to stick out inside the broad spectrum of laser crystals.
Their special properties have not just paved the way in which for technological advancements but have also unlocked new alternatives for foreseeable future exploration.
Proper utilization, adherence to safety protocols, common maintenance, and a balanced respect for the strength of lasers are all essential in ensuring safe operation.
We suggest to employ frequency-selective quasi parity-time symmetry to lessen the heat generated by coherent anti-Stokes Raman scattering (Cars and trucks) reversed cycles in Lively Raman media with period…
Once we speak of Yb:Er:glass, we make reference to a laser crystal that mostly operates in an eye fixed-safe spectral area of about 1.five µm. This wavelength area doesn’t just show up beautiful within the surface area; it carries substantial implications for a big range of apps.
For illustration, particular eye-safe lasers may cause damage into the cornea or maybe the lens, specially When the publicity is prolonged or maybe the laser electrical power is superior.
Figure five(a) demonstrates the heartbeat width and peak energy of the 2nd-Stokes laser to be a purpose in the incident pump energy at fifty kHz. The pulse width is less than two ns and it decreases Using the growing pump depth. The heartbeat width may be as slim as 1.1 ns at 27.two W, that's appreciably shortened as compared to that of the elemental laser and will be largely attributed for the Raman pulse compression[15]. Additionally, the cascaded Raman course of action can also improve the influence of the pulse compression[43]. Additionally, these types of a short pulse width may additionally have arisen from the shorter Raman cavity, which is able to reduce the spherical journey time with the Stokes photons and make the Create-up from the Stokes laser pulse a lot quicker. Correspondingly, the peak energy of a single pulse reaches around forty kW. This is actually the maximum peak electric power at any time documented to the eye-safe diamond Raman lasers to the very best of our understanding. The typical output ability and peak electric power like a functionality in the PRF are check here revealed in Fig.
The one.5 µm wavelength location is particularly fascinating mainly because it coincides Along with the bare minimum h2o absorption in biological tissue. This attribute tends to make Yb:Er:glass a really perfect choice for biomedical programs, wherever it’s necessary to lower likely tissue destruction.
Moving on to Tm:YAG, the narrative shifts slightly. This laser crystal encompasses a dominant emission line from the vicinity of two.0 µm, a variety that is definitely also regarded as eye-safe. Even so, it’s the special Qualities linked to this certain wavelength that truly set Tm:YAG apart.
When eye-safe lasers are safer, improper dealing with can continue to pose dangers, which include thermal injuries or accidental beam route into your eye.
It’s crucial to keep in mind that the wavelength of one.five µm is just one facet of Yb:Er:glass. Combined with other distinctive properties which include broad gain bandwidth, significant quantum efficiency, and temperature security, Yb:Er:glass exhibits fantastic Over-all efficiency in several applications, equally concerning efficiency and safety.
After we discuss of Yb:Er:glass, we refer to a laser crystal that principally operates in an eye-safe spectral area of close to one.five µm. This wavelength area doesn’t just show up beautiful within the surface area; it carries substantial implications for a big range of programs.