High average power harmonic generation
Abstract
High average power frequency conversion using solidstate nonlinear materials is discussed. Recent laboratory experience and new developments in design concepts show that current technology, a few tens of watts, may be extended by several orders of magnitude. For example, using potassium dideuterium phosphate, efficient doubling (greater than 70 percent) of Nd:YAG at average powers approaching 100 KW is possible; for doubling to the blue or UV regions the average power may approach 1 MW. Configurations using segmented apertures permit essentially unlimited scaling of average power. High average power is achieved by configuring the nonlinear material as a set of thin plates with a large ratio of surface area to volume, and cooling the exposed surfaces with a flowing gas. The design and material fabrication of such a harmonic generator is well within current technology.
 Publication:

IEEE Journal of Quantum Electronics
 Pub Date:
 May 1987
 DOI:
 10.1109/JQE.1987.1073391
 Bibcode:
 1987IJQE...23..575E
 Keywords:

 Energy Conversion Efficiency;
 Frequency Converters;
 Harmonic Generations;
 High Power Lasers;
 Neodymium Lasers;
 Yag Lasers;
 Carbon Dioxide Lasers;
 Lithium Niobates;
 Nonlinear Optics;
 Semiconductors (Materials);
 Lasers and Masers