Laser induced damage in zinc tris(thiourea) sulfate and bis(thiourea) cadmium chloride

Abstract

Laser induced damage threshold values are reported for two metal-organic complex crystals, zinc tris(thiourea) sulfate, and bis(thiourea) cadmium chloride. These crystals have single shot and multiple shot damage thresholds which are the highest among the solution grown crystals. The damage morphology, obtained by irradiating with fluences close to the threshold, reflects the symmetry of the face of the test site. At higher fluences the damage leads to stress-induced fracture or thermo-chemical degradation.

Vibrational spectroscopic study of the semiorganic nonlinear optical crystal bis(thiourea)cadmium chloride

“…Bis(thiourea)cadmium chloride, Cd[CS(NH 2 ) 2 ] 2 Cl 2 (BTCC), has been identiÐed as a promising candidate1 and has been extensively investigated for its linear and nonlinear optical properties,1 crystal growth and mechanical properties2 and laser-induced damage. 3 BTCC crystallizes in the orthorhombic space group with four asymmetric units in the unit cell. The Pmn2 1 , lattice parameters are a \ 5.80 b \ 13.07 and Ó, Ó c \ 6.48…”

Optical imaging of the growth kinetics and polar morphology of zinc tris(thiourea) sulphate single crystals

“…ZTS shows non critical type-II phase matching with low angular sensitivity and high laser damage resistance [2,3]. These properties make it very useful material for high power laser applications.…”

Elastic properties of zinc tris(thiourea) sulphate in a wide temperature range studied by Brillouin spectroscopy

“…It is a semiorganic nonlinear type II material of second harmonic generation [4] and is almost 1.2 times more nonlinear than KDP [5]. It has a high damage resistance [6] and a low UV-cutoff of about 260 nm. Therefore, it has been considered suitable for frequency conversion in high-power lasers.…”