CY3708 Cr:GSGG Crystal

Catalog No.	CY3708
Material	Cr:GSGG Crystal
Density	6.496
Appearance	Translucent crystalline solid
Youngs' Modulus	210
Poisson Ratio	0.28

Cr:GSGG Crystal co-doped with chromium is a kind of high efficiency laser material. Stanford Advanced Materials (SAM) is a trusted supplier and manufacturer of Optical products.

Related products: Er:YAG, Nd:YAG, Nd:Ce:YAG, Ho:Cr:Tm:YAG

INQUIRY

Description

Specification

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

*Density (gcm^-3)**	6.495
*thermal capacity (Jg^-1K^-1)*	0.4029
*heat conductivity coefficient (Wm^-1K^-1)*	6
thermal expansion (10^-6 K^-1)	7.5
Poisson's ratio	0.28
Young modulus (GPa)	210
Breaking tenacity (MPa)	1.2
*Thermal stress resistance (Wm^-1)^b**	660

Spectral Properties

Emission wavelength (nm)	1061.2
Emission cross section (pm²)^a	13
R2-> Y3 Transition line width (cm^-1)	11.5
Fluorescence lifetime of Nd3+ at low concentration (<10¹⁷cm^-3 )	273-283
Service life reduced by 50% Nd³⁺concentration (10²⁰neodymium cm^-3 )	5

Optical properties

Refractive index in 1064 nm	1.9424
Refractive index varies with temperature dn / dt, (10^-6 k^-1)	10.9
P11	-0.012 ± 0.003
P12	0.019 ± 0.003
P44	-0.0665 ± 0.0013

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.