NDLI: Frequency-doubling of femtosecond pulses in walk-off compensated N-(4-nitrophenyl)-L-prolinol

Content Provider	IEEE Xplore Digital Library
Author	Torres, J.P. Carrasco, S. Torner, L.
Copyright Year	2001
Description	Author affiliation: Lab. of Photonics, Univ. Politecnica de Catalunya, Barcelona, Spain (Torres, J.P.; Carrasco, S.; Torner, L.)
Abstract	Summary form only given. N-(4-nitrophenyl)-L-prolinol (NPP) is an organic molecular crystal developped by molecular engineering, that exhibits one of the highest phase-matchable second-order susceptibilities reported so far in the near-infrared spectral range (d/sub eff//spl ap/56 pm/V). However, the large spatial and temporal walk-off existing in NPP can limit severely the usefulness of the material away from the noncritical phase-matching (ncpm) wavelength and for shorter pulses. Here we show that subpicosecond pulses can be efficiently frequency-doubled and mixed in NPP with moderate pump intensities, by employing tilted pulse techniques. These techniques make use of the large Poynting vector walk-off exhibited by NPP crystals outside the ncpm. Such techniques are based on the diffraction of the input pump wave by a grating so that each spectral component is dispersed in a different direction, thus the resulting signal is a tilted pulse.
Sponsorship	APS/Div. Laser Sci.
Starting Page	16
Ending Page	17
File Size	245478
Page Count	2
File Format	PDF
ISBN	155752663X
DOI	10.1109/QELS.2001.961789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-05-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Optical Soc. Of America
Subject Keyword	Biomedical optical imaging Diffraction Optical saturation Frequency conversion Optical pumping Laser excitation Ultrafast optics Optical frequency conversion Probes Nonlinear optics
Content Type	Text
Resource Type	Article

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