Efficient frequency doubler utilizing a cesium dihydrogen arsenate crystal

The results are reported of an investigation of a highly efficient laser frequency doubler utilizing a crystal of cesium dihydrogen arsenate (CDA). The high doubling efficiency is due to the considerable width of the phase-matching curve. This width is greater than for other crystals of the KDP group, which includes CDA. Another advantage of this frequency doubler is the ability to operate under 90° phase-matching conditions, which are achieved by heating the crystal to ~45°C.