Optical Filters and Specialty Glasses
YAGLASS-T -ナノ結晶含有ガラス-

NIR to Visual Light Converting Glass

  • YAGLASS-T detects/ converts near-infrared (NIR) light, such as YAG laser beam, to visual light.
  • YAGLASS-T is high transparent glass which contains nano-sized crystals.
  • High threshold against high-power YAG lasers
  • Compared to previous version (“YAGLASS”), YAGLASS-T is lightweight, more resistant to breakage and chipping.
  • Dimensions of a standard (non-customized) product are 20 x 20 x 2.5 mm. Custom dimensions are available upon request.
  • Same emission intensity (0.55 μm) as the previous version, YAGLASS
  • RoHS: Compliant

Emission Spectrum

Transmission Spectrum

Specifications and Basic Properties

Dimensions of detection glass (standard products) 20 x 20 x 2.5 mm
Detectable range of wavelength 0.9 - 1.07 μm
Detecting sensitivity
(when laser at 1.06 μm is used)
30 mW/mm²
Emission wavelength 0.55 μm,0.66 μm
Surface damage threshold
(laser irradiation at wavelength of 1.06 μm and pulse width of 10 ns)
51 J/cm²
Refractive index (nd) 1.539
Transformation point (Tg) 584℃
Thermal expansion (100 - 300℃) 89×10-7/℃
Specific gravity S.g 3.4


  • Never look at laser beam directly or through lens. Diffused reflected beam is also harmful.
  • Wear laser protective goggles for operator's eyes. The goggles should be used against scattered beam, so avoid to direct beam or reflection beam.
  • The detection part is made of glass. Please handle with care.

Detection Image