Abstract
A novel method of exciting the diffraction-limited output of the single pass travelling wave optical parametric generator (TOPG) is demonstrated. TOPG based on KTP crystal was pumped by the Bessel beam formed by an axicone. In [1–2] possibility to obtain the diffraction limited beam from TOPG using two- and three- beam pump has been shown. In the case of Bessel beam all plane waves compiling pump beam are lying on the cone surface. This represents a limiting case of multibeam pump.
© 1998 IEEE
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