Abstract

Compression of pulses by prismatic or grating compressors is a standard technique of fs pulse generation.^[1] To avoid spatial walkoff of the spectral components usually 4 prisms or 4 gratings are used. In case of a double prism compressor parallel, but spatially dispersed beams are formed. However, in the focal plane of a lens these spatially dispersed spectral components overlap and form a short pulse (Fig. 1). The advantage of such 2 prism or 2 grating compressor is the reduced losses with respect to the 4 component compressor. (The losses are especially important in grating compressors.)

© 1992 IQEC