CTH:YAG

Ho,Cr,Tm:YAG -yttrium aluminium garnet laser crystals doped with chromium,thulium and holmium ions to provide lasing at 2.13 microns are finding more and more applications,especially in the medical industry.The inherent advantage of the crystal crystal is that it employs YAG as the host. YAG’s physical,thermal and optical properties are well known and understood by every laser designer.  It has wide applications in surgery, dentistry, atmospheric testing, etc.

Advantages of CTH:YAG:

  • High slope efficiency

  • Pumped by flash lamp or diode

  • Operates well at room temperature

  • Operates in a relatively eye-safe wavelength range

Basic properties:

Forluma
Ho,Cr,Tm:Y3Al5O12
Structure
Cubic
Lattice constant
12.01Å
Melting point
1970°C
Density
4.56g/cm3
Refractive index
1.82
Thermal expansion
7.8x10-6 /K
Thermal conductivity
14W/m/K, 20°C
10.5W/m/K, 100°C
Emission Wavelength 2094nm
Main pump wavelength 400~800nm
LD pumped absorption wavelength 781nm
Mohs hardness 8.5
Fluorescent lifetime 8.5nm

Technical Parameters:

  • Concentrationatm%):Ho:0.3~0.4at% Cr:0.3~1.2at% Tm:5~6at%

  • Orientationcrystalline direction

  • Wavefront distortion1/2per inch @633nm

   Extinction ratio>25dB

  • ToleranceRods with diameter:(+0、-0.05)mm,( ±0.5) mm

   Surface quality10/5 Scratch/dig per MIL-O-1380A

  • Parallelism<10arc seconds

  • Perpendicularity<5arc minutes

  • Aperture>90%

  • Flatnessλ/10@ 633 nm



Customized available