We demonstrate a regenerative glass amplifier with Alexandrite regenerative amplifier. By chirped pulse amplification, this amplifier has been utilized to produce mill joule, picosecond pulses. This technique makes it straightforward to improve the total gain bandwidth of the glass systems. With this method, broadband and others can also be employed. Chromium-doped solid-state lasers called alexandrite lasers are based on the crystalline gain medium alexandrite. There are natural alexandrite gemstones, however, the material for laser crystals is generated artificially and formed in monocyte

line form with exceptional crystal quality using a modified Czochralski growth method. Although the majority of the Laser pump cavity normally lives at what are known as mirror sites, there are two other potential sites for the ions in the host crystal. At wavelengths close to 0.75 m, which are typical emission wavelengths between 0.7 m and 0.8 m, the maximum laser gain and wall-plug efficiency can be achieved. A wide emission bandwidth is typical for transition-metal doped laser gain medium. It is possible to build broadly wavelength-tenable lasers based on alexandrite that occasionally go significantly above 0.8 m. Alexandrite, discovered in the late 1970s, was one of the first veronica laser gain media. It can also be used for veronica mode-free narrowband lasing on the so-called R line, so keep that in mind as well.

Alexandrite has high anisotropy

Alexandrite's orthorhombic crystal structure lacks symmetry. As a result, the absorption and gain properties of light are significantly influenced by the direction of Flashlamp driver. Together with the material's great birefringence, this makes it straightforward to obtain linearly polarized emission with little loss in depolarization.

Conclusion

The spectroscopic properties of alexandrite are far more complex than those of Nd: YAG, for example, due to the significant contribution of phonons at the lower laser intensity as well as the directional dependency. This is because the upper laser level has a somewhat larger excitation energy than a long-lived level right below it, necessitating a thermal excitation phase in the laser process.