作者: P. Baum , S. Lochbrunner , E. Riedle
DOI: 10.1007/S00340-004-1668-2
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摘要: Ultraviolet pulses with a duration of 7 fs are efficiently generated by frequency doubling the output noncollinear optical parametric amplifier. The ultraviolet tunable between 275 to 335 nm. acceptance bandwidth crystal is increased factor 80 through high-order achromatic phase matching. chirp visible and dispersion introduced along beam path compensated partially before after crystal. For design management, we investigate second harmonic generation mixed orders explicitly discuss transfer spectral in doubling. A simple analytic theory derived that correctly describes frequently observed narrowing effects. We find chirped SHG avoids allows for precompression encountered path. apply generate 18.7 an extremely setup.