CLS Filter Glass

CLS Filter Glass

CLS silicate glass has high UV and IR cutoff ability. It can be used as a laser cavity material for absorbing 1 micron and unwanted UV and IR radiation in high repetition rate high-energy laser systems.

Features:

  • High optical density
  • High transmittance of visible light
  • Excellent light absorption characteristics

Diffuse-reflection Pumping Cavity

Two key technologies have been used in the pumping cavity. Firstly, CLS-silicate glass is used as a filter to prevent the color centers and reduce the thermal effects in the laser medium. Moreover, CLS-silicate glass has a strong absorption at the emission peak of Nd3+, which helps reduce the radial ASE and increase the stored energy in the gain medium. Secondly, the reflector is a diffuse type. Optimizing the pumping structure ensures uniform pumping distribution and high pumping efficiency, which is very important for good beam quality. This kind of pumping cavity is perfect for a high-energy laser system with high repetition.

Optical Specifications

PropertiesValue
UV Cutoff (5mm,2% transmission) (nm)350
IR Cutoff (nm)2500
Refractive Index (d 589.3nm)1.563
Refractive Index (1053nm)1.57
Abbe Value56.6

Thermal Specifications

PropertiesValue
Transformation Temp. (℃)490
Softening Temp. (℃)540
Coeff.of Linear Thermal Expansion (10-7/K) (30~100℃)87
Coeff.of Linear Thermal Expansion (10-7/K) (30~300℃)100
Thermal Conductivity (25 ℃) (W/mK)1.1

Other Specifications

PropertiesValue
Density (g/cm3 )2.87
Dw(H2O 98℃) (mg/(cm2/day))0.109

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