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Observation of sum-frequency-generation-induced cascaded four-wave mixing using two crossing femtosecond laser pulses in a 0.1 mm beta-barium-borate crystal Public Deposited

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  • We demonstrate the simultaneous generation of multicolor femtosecond laser pulses spanning the wavelength range from UV to near IR in a 0.1 mm Type I beta-barium borate crystal from 800 nm fundamental and weak IR super-continuum white light (SCWL) pulses. The multicolor broadband laser pulses observed are attributed to two concomitant cascaded four-wave mixing (CFWM) processes as corroborated by calculation: (1) directly from the two incident laser pulses; (2) by the sum-frequency generation (SFG) induced CFWM process (SFGFWM). The latter signal arises from the interaction between the frequency-doubled fundamental pulse (400 nm) and the SFG pulse generated in between the fundamental and IR-SCWL pulses. The versatility and simplicity of this spatially dispersed multicolor self-compressed laser pulse generation offer compact and attractive methods to conduct femtosecond stimulated Raman spectroscopy and time-resolved multicolor spectroscopy. (C) 2012 Optical Society of America
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  • Liu, W., Zhu, L., & Fang, C. (2012). Observation of sum-frequency-generation-induced cascaded four-wave mixing using two crossing femtosecond laser pulses in a 0.1 mm beta-barium-borate crystal. Optics Letters, 37(18), 3783-3785.
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  • This work is supported by the Oregon State University (OSU) faculty startup research fund and the College of Science (COS) venture fund award to C. Fang.
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  • description.provenance : Made available in DSpace on 2013-02-11T23:38:11Z (GMT). No. of bitstreams: 1 FangChongChemistryObservationSumFrequency.pdf: 370359 bytes, checksum: 31468911673b7da715d0ae3ca438d873 (MD5) Previous issue date: 2012-09-15
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