Cr4+:YAG Passive Q-Switch Crystal

Specifications

Type Of Crystal: Cr:YAG
Crystal Diameter: 3 mm
Crystal Length: 1.3 mm
AR Coating: One side
Coatings: AR≤ 0.2% @1064nm
Chemical Formula: Cr4+:Y3Al5O12
Thermal Expansion /(10-6/°C@25°C): 7.8 <111> | 7.7 <110> | 8.2 <100>
Emission Wavelength: 1350 nm ~ 1600 nm
Transmission: 10% to 90%
Charge Compensating Ion: Ca2+, Mg2+
Refractive Index @1064 Nm: 1.83
Poisson Ratio: 0.25
Extinction Ratio: 25 dB
Thermal Shock Resistance Parameter: 800 W/m
Specific Heat/ (J·g-1·K-1): 0.59
Thermal Conductivity: 0.1213
Melting Point: 1970 °C
Tensile Strength: 2 GPa
Young's Modulus: 335 GPa
Mohs Hardness: 8.5
Mass Density: 4.56 g/cm^3
Orientation: [100] or [110] < ±0.5°
Lattice Parameters, Å: 12.01
Crystal Structure: cubic - la3d
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Features


  • Wide Laser Compatibility: Suitable for 1350~1600nm lasers and 900~1200nm passive Q-switching lasers, including Nd:YAG, Nd:YLF, Nd:YVO4, and Yb:YAG lasers.

  • Excellent Growth Method: Typically grown by the Czochralski method, ensuring high-quality crystals.

  • Superior Material Properties: High chemical stability, thermal conductivity, UV resistance, and high damage threshold.

  • Higher Reliability & Longer Lifetime: Offers increased durability and consistent performance over time.

  • Radiation Stability: Maintains performance under various radiation conditions.

  • Optical Properties: High extinction ratio of 25dB and a refractive index of 1.83 @1064 nm.

  • Thermal Properties: Thermal conductivity of 0.1213 and a melting point of 1970°C.

  • Mechanical Robustness: Mohs hardness of 8.5 and a tensile strength of 2 GPa.

  • Versatile Applications: Ideal for Q-switching and model-locking in Nd:YAG, Nd:YAP, Nd:KGW, and Nd:YVO4 lasers, as well as pumping erbium-doped lasers and amplifiers.

  • Customizable Specifications: Available in various dimensions and coatings, with surface quality of 10/5 and flatness <λ/8@632 nm.

  • High Damage Threshold: Withstands > 500 MW/cm², making it suitable for high-power applications.

Applications


  • Passive Q-Switching for Nd:YAG Lasers: Enables pulsed operation at 1064 nm and related wavelengths.

  • Passive Q-Switching for Nd:YLF and Nd:YVO4 Lasers: Supports efficient pulse generation in various solid-state lasers.

  • Pumping Erbium-Doped Lasers and Amplifiers: Used as a Q-switch in lasers emitting around 1550 nm.

  • Near-Infrared Laser Systems: Suitable for lasers operating in the 1350–1600 nm wavelength range.