HIGH POWER LASER CONVERTER BASED ON PATTERNED SRB4BO7 OR PBB407 CRYSTAL

A disclosed laser system is configured with a laser source outputting light at a fundamental frequency. The output light is incident on a frequency converter operative to convert the fundamental frequency to a higher harmonic including at least one frequency converting stage. The frequency converter is based on a SrB4O7 (SBO) or PbB4O7 (PBO) nonlinear crystal configured with a plurality of domains. The domains have periodically alternating polarity of the crystal axis, enabling a QPM use and formed with each with highly parallel walls which deviate from one another less than 1 micron over a 10 mm distance. 所公开的激光系统被配置有输出基频光的激光源。输出光入射在频率转换器上，该频率转换器操作用于将基频转换为包括至少一个频率转换级的高次谐波。频率转换器基于配置有多个域的SrB4O7(SBO)或PbB4O7(PBO)非线性晶体。这些域具有周期性交替的晶轴极性，从而能够使用QPM，并且形成为每个域都具有高度平行壁，这些壁在10mm的距离内彼此偏离小于1微米。