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HGTR KTP Crystals

  • High gray track resistance
  • High damage threshold: >2GW/cm^2 (@1064nm; TEM00, 10nS,10Hz)
  • High conversion efficiency upto 80%
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HGTR-KTP crystals Dimension Tolerance (W±0.1mm)x(H±0.1mm)x(L+0.5/-0.1mm)
Size Range Aperture:~10x10mm; Length: ~15mm Clear Aperture central 90% or the diameter
Scattering of Crystals No visible scattering paths or centers
when inspected by a 50mW green Laser
Flatness less than λ/8 @ 633nm
Transmitting Wavefront Distortion less than λ/8 @ 633nm Chamfer ≤0.2mmx45°
Chip ≤0.1mm Surface Quality better than 10/5 S/D (MIL-PRF-13830B)
Parallelism ≤20 arc seconds Perpendicularity ≤5 arc minutes
Angle Tolerance ≤0.25° Coating AR/AR@1064nm+532nm;
R<0.2%@1064nm and R<0.5%@532nm
Quality Warranty Period one year under proper use

Gray track damage is a serious damage for KTP crystals, the conventional flux-grown KTP crystal is susceptible to the gray track damage, the hydrothermal-grown KTP has high damage threshold and high ability to anti gray track. It is extremely suitable for laser system applications requiring high power, high efficiency and/or durability where regular flux-grown KTP crystals will suffer from gray track damage. Hangzhou Shalom EO offers the anti-gray track KTP crystals (HGTR-KTP) with excellent properties.


  • Second harmonic generation for frequency doubling
  • Optical parametric oscillator (OPO)
  • Electro-optic pockels cells
  • Quasi phase matching
HGTR-KTP Crystals for EO Applications

HGTR-KTP Crystals for EO Applications

  • Low insertion loss, low quarter-wave voltage
  • High repetition rate
  • Wide optical bandwidth
  • High damaging threshold
  • No piezo-electric ringing
  • Application: Q-switches, pulse picking and EO modulator