Products -> Crystal -> Cr:YAG
 
Cr:YAG          Chromium Doped Yttrium Aluminum Garnet
 
Cr4+:Y3Al5O12 crystal is one of the most promising passive Qswitching materials for passively Q-Switching diode pumped or lamped Nd or Yb doped lasers at wavelength from 0.8 to 1.2um. Because of its chemical stability, durability, UV resistance, good thermal conductivity, high damage threshold (> 500 MW/cm ) and easy operation, it will replace some traditional switching materials, such as LiF and organic Dye. 
The preliminary experiments of Cr :YAG showed that the pulse width of passively Qswitched lasers could be as short as 9 ns for diode pumped Nd:YAG lasers and repetition rate as high as 10kHz for diode pumped Nd:YVO4 lasers.
 
Specifications
 
Dimensional Tolerances Diameter 2 ~ 14mm
Length 0.1 ~ 12mm
Dimension Tolerance (W ±0.1mm) x (H ±0.1mm) x (L ±0.1mm)
Surface Flatness <λ/10@633 nm
Surface Quality better than 20/10 Scratch and Dig
Parallelism <20 arc seconds
Perpendicularity <5 arc minutes
Initial Transmission 10% ~ 99%
AR Coating <0.25%@1064nm
 
Physical and Optical Properties
 
Crystal Structure Cubic
Dopant 0.5~3% Cr
Melting Point 1970℃
Curie Point 936℃
Density 4.56 g/cm3
Mohs Hardness 8.5
Recovery Time 8.5us
Thermal Conductivity 12.13W/m/K
Loss Coefficient 0.003cm-1
Refractive Index 1.82 @1064nm
Base State Absorption Cross Section 4.3x10-18/cm2
Emission State Absorption Cross Section 8.2x10-19/cm2
Fluorescence Lifetime 3.4us
Optical Damage Threshold > 500MW/cm2
 
Standard Product Series
 
Part No.
Diameter(mm)
Transmission
Coating
Unit Price
CYG101
6
40%
AR/AR @1064nm
$188
CYG102
6
60%
AR/AR @1064nm
$188
CYG103
6
70%
AR/AR @1064nm
$188
CYG104
6
80%
AR/AR @1064nm
$188
CYG105
10
40%
AR/AR @1064nm
$198
CYG106
10
60%
AR/AR @1064nm
$198
CYG107
10
70%
AR/AR @1064nm
$198
CYG108
10
80%
AR/AR @1064nm
$198