Cr4+:YAG Crystals

Laser Components >> Passive Q-switch Crystals

  • Simple to use, no need of external driving system
  • Compact setup
  • Working frequency upto 10kHz


Chromium Doped Yttrium Aluminum Garnet (Cr4+:YAG) Crystal is excellent E-O material for passively Q-switching diode pumped or lamp-pumped Nd:YAG, Nd:YLF, Nd:YVO4 and other Nd (or Yb) doped lasers at 0.8~1.2µm. With the advantages of chemically stable, durable, UV resistant, good thermal conductivity, high damage threshold ( >500 MW/cm2) and easy operation, Cr4+:YAG is edging out traditional materials, such as LiF, organic Dye and color centers.

Dimensions range Surface Area 2×2 mm2~ 14×14mm2
Length 0.1mm ~ 12mm
Doping Concentration 0.03mol% ~ 0.65mol%
Initial Transmission 5% ~ 95%
Flatness < λ/10 @633nm
Wavefront Distortion < λ/6 @633nm
Parallelism < 30″
Surface Quality 10/5 S/D (per MIL-O-13830A)
AR coating R<2% @ 1064nm or 1053nm


Physical and optical Properties
Chemical Formula Cr4+:Y3A15O12
Crystal Structure Cubic Garnet
Density 4.56g/cm3
Hardness 8.5 Mohs
Damage Threshold > 500 MW/cm2
Regractive Index 1.82 @ 1064 nm

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