Cr:GSGG Crystal Description
Cr:GSGG Crystal co-doped with chromium is a kind of high-efficiency laser material. The electro-optic shutter element is used for the first time to provide the Q switching operation of ruby laser. Passive Q-switched ruby lasers are realized by saturable dye absorbent and colored glass (selenium and cadmium sulfide compounds). In recent years, the characteristics of the dye Q switch in pulsed ruby lasers have been studied. However, due to the degradation (decomposition) of dyes, the durability of dye q-switches is limited, and glass Q-switches are prone to damage. Therefore, the passively q-switched Ruby laser Gd3Sc2Ga3O12 (Cr4+: GSGG) with tetravalent Chromium doped Gadolinium gallium garnet provides high reliability, durability, and high efficiency for the first time.
Cr:GSGG Crystal Specifications
Material Properties
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Density (g*cm-3)
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6.495
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thermal capacity (J*g-1*K-1)
|
0.4029
|
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heat conductivity coefficient (W*m-1*K-1)
|
6
|
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thermal expansion (10-6 K-1)
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7.5
|
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Poisson's ratio
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0.28
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Young modulus (GPa)
|
210
|
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Breaking tenacity (MPa)
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1.2
|
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Thermal stress resistance (W*m-1)b
|
660
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Spectral Properties
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Emission wavelength (nm)
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1061.2
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Emission cross section (pm2)a
|
13
|
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R2-> Y3 Transition line width (cm-1)
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11.5
|
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Fluorescence lifetime of Nd3+ at low concentration (<1017cm-3 )
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273-283
|
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Service life reduced by 50% Nd3+concentration (1020neodymium cm-3 )
|
5
|
Optical properties
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Refractive index in 1064 nm
|
1.9424
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Refractive index varies with temperature dn / dt, (10-6 k-1)
|
10.9
|
|
P11
|
-0.012 ± 0.003
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|
P12
|
0.019 ± 0.003
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|
P44
|
-0.0665 ± 0.0013
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Absorption spectra
Cr:GSGG Crystal Applications
- Cr4+ : GSGG for ruby laser saturable absorber Q switch:
The passively Q-switched Ruby laser Gd3Sc2Ga3O12 (Cr4+: GSGG) with tetravalent Chromium doped Gadolinium gallium garnet provides high reliability, durability and high efficiency for the first time. Conventional single-output pulse operation (100MJ and 27ns duration) has an efficiency of 25-30% compared to free-running ruby laser operation.
Cr:GSGG Crystal Packaging
Our Cr:GSGG Crystal is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
