TW354434B - Rod type solid laser heat lens effect non-sensitive oscillator - Google Patents

Abstract

A rod type solid laser heat lens effect non-sensitive oscillator in an optic rod type solid laser system, comprising: a crystal rod, two ends thereof have rectangular cross sections, the primary surfaces of two ends of the crystal rod with an equal effect thick lens are a first primary surface and a second primary surface; a first lens for focusing a light beam to the first primary surface of the crystal rod, the light beam from the crystal rod near the end surface of the primary surface and passing through the first lens is parallelized, the distance between the focus of the first lens and the primary surface is a first distance, and first distance is smaller than the focus distance of the first focus and is a negative value; a second lens for focusing a light beam to the second primary surface of the crystal rod, the light beam from the crystal rod near the end surface of the primary surface and passing through the second lens is parallelized, the distance between the focus of the second lens and the primary surface is a second distance, and second distance is smaller than the focus distance of the second focus and is a negative value; a plane output reflector installed near the outer end of the second lens; and a plane high reflector installed near the outer end of the second lens.