CTH:YAG Cr: Tm: Ho: YAG is a high efficient laser material which lasers at 2.1 µm. It has wide applications in medical, military and meteorology fields. ADVANTAGES ● High slope efficiency ● Pumped by flash lamp or diode ● Operates well at room temperature ● Operates in a relatively eye-safe wavelength range ● Flat/flat ● Parallel/ anti-parallel wedged ● Brewster angle ● Concave/convex radii ● Cylinder grooved
Specifications
Material | Cr: Tm: Ho: YAG |
Dopant concentration | Ho:～0.35at%, Tm:～5.8at%, Cr:~1.2at% |
Crystal Orientation | ±5° |
Dimensions | Diameter:3mm-6mm, Length:15-120mm(upon customer’s request) |
Extinction Ratio | >25dB(depends on actual size) |
Barrel Finish | Ground Finish 400#Grit |
Scratch/Dig | 10-5@MIL-O-13830A |
Diameter Tolerance | +0/-0.05mm |
Length tolerance | +/-0.5mm |
Wavefront Distortion | ≤ 0.125λ/inch@1064nm |
Perpendicularity | ≤ 5 arc minutes |
Parallelism | ≤ 10 arc seconds |
Chamfer | ≤0.15 × 45 ° |
Anti-Reflection Coating | ≤0.25%@2094 nm |
Properties
Crystal structure | Cubic |
Laser wavelength | 2.094um |
Melting point | 1970°C |
Fluorescence lifetime | 8.5ms |
Absorption linewidth | 4nm |
Diode pump band | 781nm |
Major pump bands | 400~800nm |
Index of Refraction | 1.80@2.094um |
Density | 4.56 gcm-3 |
Laser Transition | 5I7 - 5I8 |
Photon Energy | 9.55 x 10-20 J |
Emission Cross Section | 7 x 10-21 cm2 |
