Optical Materials
  Optical Glass
  Low Expansion Materials
  IR Materials
Micro-Optical Components
Fiber Optic Components
Light Sources & Photodiodes

Chromium Doped Yttrium Aluminum Garnet (Cr4+:YAG)

Chromium doped yttrium aluminum garnet combines a large absorption cross section in the 0.9-1.2 micrometer spectral region, good thermal conductivity and high damage threshold which makes it an attractive choice as a passively Q-switching diode pumped or lamp pumped passive Q-switching material for Nd doped lasers. Because of better performance, compact size and low cost, it replaces the more traditional Q-switching materials like organic dyes.

  Crystal Structure Cubic
  lattice constant (Å) 12.01
  Dopant Concentration (atm%)
0.5 ~ 3
  Damage Threshold (MW/cm2) 500
  Fluorescence Lifetime (us) 3.4
  Emission Cross Section (cm2) 8.2×10-19
  Thermal Conductivity (W/mK)
  Refractive Indices   n = 1.82 at 1064nm
  Mohs Hardness 8.5
  Density (g/cm^3) 4.56
  Young's Modulus (GPa) 282
  Poisson's Ratio 0.28
  Table 1: Cr4+:YAG Properties

Copyright © 2016 Precision Micro-Optics Inc. All Rights Reserved.