Passive Q switch crystal

A Passive Q switch is a tool that can accomplish Q switching by taking advantage of the fact that the transmittance of optical material depends on the laser intensity at a particular wavelength. The laser freeze linker generally creates saturated absorptive crystals in passive Q-switched crystals. The absorption coefficient of saturated absorption crystal lowers with the increase of occurrence light strength. When the saturation value is reached, the loss (Q value) in the laser tooth cavity is regulated, as well as the pulse is released.

Some passive Q-switching crystals are listed below:

Co: Spinel

Co: Spinel crystal

The primary attributes of Co: Spinel crystal:

1.3 to 1.6 mu m within the scope of the reduced optical loss
High damages limit

V: YAG

V: YAG crystal, the Chinese name vanadium-doped yttrium aluminium garnet, is a relatively new crystalline product. Ideal for 1.06 ~ 1.44 μm laser discharge, specifically for 1.3 μm Nd laser. The absorption height cross-section of the excited state is not evident near the absorption top of 1300 nm. This product has excellent optical, mechanical and also thermal homes. It can be created by the Czochralski method. V: YAG crystals can be used in Nd: YAG, Nd: YAP, Nd: KGW, Nd: YVO 4 and various other energetic media to obtain the passive Q-switched laser with portable structure as well as outstanding efficiency.

V: YAG crystal Main characteristics:

High-ground state absorptio
Not noticeable thrilled state absorption
Q switch high comparison
Good optical residential or commercial properties, mechanical residential or commercial properties and also thermal buildings
Ultraviolet immune high damage threshold

Cr: YAG

Cr4+: YAG crystal, Chinese name chromium doped yttrium aluminium garnet, is an optimal product for Q switching of laser (Nd: YAG as well as other doping Nd or Yb) with wavelengths from 0.8 to 1,2 μm. A noteworthy function of Cr4+: YAG is its high damages threshold of 500-1000 MW/cm2. Its absorption band prolongs from 800 nm to 1200 nm and reaches its optimal at regarding 1060nm, with a huge cross-sectional area of absorption height.

Cr: YAG crystal Highlight:

500-1000 MW/cm2 high damages limit
Extremely stable chemical as well as reliability
Great thermal conductivity, lengthy life span
Portable passive Q switch
Simple to operate
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