Method and apparatus for generating MID and long IR wavelength radiation

摘要

A narrow line width optical parametric oscillator (OPO) ( 10 ) is used a pump for a tunable optical parametric oscillator to enable it to produce a mid and long wavelength IR output over a wide 5-20 micron bandwidth. The pumping OPO ( 10 ) is then set up to be non-colinearly phase matched. To enable the pumping OPO ( 10 ) to exhibit the narrow line width, it is seeded with a narrow line width seeding source. The result is output energy having an extremely narrow 4 nanometer line width. The narrowness of the pumping OPO ( 10 ) output is derived first by using non-colinear phase matching in the pumping OPO ( 10 ) and secondly by using seeding in the pumping of the pumping OPO ( 10 ).