HGTR-KTP

Raicol was the first to develop High Gray Track Resistance KTP crystals. Raicol’s unique crystal growth recipe enables high power density with KTP’s high SHG coefficient. The gray tracks occur due to induced color centers in the KTP crystal that have broad optical absorption in the visible and near-infrared wavelengths. Gray tracks are generated when a crystal is subjected to high average power pulsed lasers or CW laser irradiation. The process of the gray track formation is cumulative and leads to deterioration in transparency and harmonic conversion.