Abstract
A Bessel beam pumped periodically poled lithium niobate optical parametric oscillator has been characterized. A slope efficiency of 5.4±01% was obtained and a threshold pulse energy of 472±12μJ was measured, which corresponds to a threshold fluence of 0.207 ± 0.005 J cm-2. The signal output was tuned over ∼20 nm by changing the crystal temperature by 50°C. The FWHM bandwidth at each temperature was observed to be 0.3 ± 0.1 nm at each wavelength. The beam profiles of the Bessel pump and Gaussian signal beams were studied in both the near and far field. A beam divergence of 1.14 ± 0.02 mrad was measured. © 2000 Taylor & Francis Ltd.
Original language | English |
---|---|
Pages (from-to) | 1913-1920 |
Number of pages | 7 |
Journal | JOURNAL OF MODERN OPTICS |
Volume | 47 |
Issue number | 11 |
Publication status | Published - 15 Sept 2000 |