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Cr YAG Crystal
• High homogeneity
• Excellent internal quality
• High precision of initial transmission
• Top quality of surface polishing
• Competitive price
• Mass production, quick delivery
Cr: YAG is an excellent crystal for passive Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd or Yb doped lasers at wavelength from 800 nm to 1200 nm. With advantages of chemical stability, durable, UV resistant, good thermal conductivity and high damage threshold (＞500 MW/cm2 ) and being easy to be operated, Cr:YAG is used widely to substitute for many traditional materials such as LiF, organic Dye and color centers.
By using Cr:YAG, the pulse width of passively Q-switched lasers could be as short as 5 ns for diode pumped Nd:YAG lasers, and the repetition could be as high as 10 kHz for diode pumped Nd:YVO4 lasers. Furthermore, an efficient output at 532 nm, 355 nm or 266 nm can be generated by a subsequent intracavity SHG in KTP or LBO, or THG/FOHG in LBO or BBO for diode pumped and passively Q-switched Nd:YAG or Nd:YVO4 laser. Cr:YAG is also a laser crystal with tunable output from 1.35 µm to 1.55 µm, and can be used to make ultrashort pulse (ps or fs) laser when pumped by Nd:YAG laser at 1064 nm.
WISOPTIC Standard Specifications - Cr:YAG
Orientation | [100] or [111] (deviation < 5°) |
Dopant concentration | 0.5~3 mol % |
Sizes | Diameter: 2~14 mm; Thickness: 0.1~12 mm |
Dimension tolerance | Diameter: +0.00/-0.05 mm; Thickness: +/- 0.5 mm |
Initial absorption coefficient | 0.5~6 cm-1 @ 1064 nm |
Initial transmission | 5%~95% @ 1064 nm |
Flatness | < λ/8 @ 632.8 nm |
Surface Quality | < 20/10 [S/D] |
Parallelism | < 20” |
Perpendicularity | ≤ 5' |
Transmitted Wavefront Distortion | < λ/8 @ 632.8 nm |
Clear Aperture | > 90% central area |
Coating | AR coating: R<0.2% @ 1064nm |
Laser Damage Threshold | 500 MW/cm2 for 1064nm, 10ns, 10Hz (AR-coated) |
Main Features - Cr:YAG
• High efficiency of Q-switching output
• Suitable for operation at repetitive frequency
• High optical quality
• Good anti-UV radiation ability
• Good thermal stability
Primary Applications - Cr:YAG
• Passive Q-switching for Nd and Er lasers
• Tunable output from 1.35 µm to 1.55 µm
• Ultrashort pulse (ps or fs) laser generation
