Chromium:Zinc Selenide (Cr:ZnSe) Laser Rods
Chromium:Zinc Selenide (Cr:ZnSe) can be tuned to lase over a wavelength range of 1900 to 3300nm. Cs:ZnSe is highly efficiency and capable of being pumped by a wide range of sources. Cr:ZnSe is versatile and is used across a broad range of applications, especially to configure compact solutions.

Key strengths of Cr:ZnSe:
  • Lases (tunable) over range 1900 to 3300nm
  • Highly efficient - high absorption coefficients
  • Can be pumped by a wide range of sources.
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Cr:ZnSe Laser - Availability
Doping Levels: TBA
Format: Rods, Discs and Slabs
Sizes: Diameter: 50mm max and Length: 50mm
Cr:ZnSe Laser Rod Properties
Laser / Optical Properties Units Value
Laser Wavelengths nm 2150 - 2600
Emission Linewidth nm <1
Absorption Band Peak nm
Absorption Bandwidth nm
Emission Cross-section (@1064nm) 10‾²º cm²
Fluorescent Lifetime µs
Absorption Coefficient @808nm cm‾¹
Intrinsic Loss @1064nm cm‾¹ <0.003
Refractive Index (n) @ 382nm 2.455
Thermal Optical Coeff. (dn/dT) @nm 10‾⁶/ºC 61
Physical / Thermal Properties Units Value
Chemical Formula ZnSe:Cr
Melting Point ºC 1520
Thermal Expansion Coeff. @20ºC 10‾⁶/ºC 1.5
Thermal Conductivity Coeff. @20ºC W/m/ºK 14
Specific Heat J/g K 0.79
Chemical Durability (@100ºC weigh loss rate distilled water) μg/hr.cm²
Density g/cm³ 5.27
Durability Knoop Hardness kgf/mm² 112
Mohs Hardness 8.5
Damage Threshold (10ns) J/cm²