2012
DOI: 10.1364/ol.37.003783
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Observation of sum-frequency-generation-induced cascaded four-wave mixing using two crossing femtosecond laser pulses in a 01 mm beta-barium-borate crystal

Abstract: 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… Show more

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Cited by 20 publications
(33 citation statements)
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“…Raman probe represents an advancement of conventional methods, which originates from CFWM sideband signals generated by crossing two laser pulses [the 800-nm beam (∼35 fs, 3 μJ per pulse) and the IR component of the supercontinuum white light generated in a 2-mm thick sapphire plate followed by prism compression (∼45 fs, 100 nJ per pulse)] in a 0.1-mm thick β-barium borate crystal (type I, θ = 27.8°) (22,34). The incident beam diameters on the crystal are ∼0.2 mm, and the crossing angle is ∼6°.…”
Section: Methodsmentioning
confidence: 99%
“…Raman probe represents an advancement of conventional methods, which originates from CFWM sideband signals generated by crossing two laser pulses [the 800-nm beam (∼35 fs, 3 μJ per pulse) and the IR component of the supercontinuum white light generated in a 2-mm thick sapphire plate followed by prism compression (∼45 fs, 100 nJ per pulse)] in a 0.1-mm thick β-barium borate crystal (type I, θ = 27.8°) (22,34). The incident beam diameters on the crystal are ∼0.2 mm, and the crossing angle is ∼6°.…”
Section: Methodsmentioning
confidence: 99%
“…The central wavelength and pulse energy of the two pump beams were 630 nm/1-3 µJ and 584 nm/1-3 µJ. There were also some other differences, including the Ti:sapphire amplifier pulse, and the supercontinuum generated in bulk materials [58].…”
Section: Experimental Setupsmentioning
confidence: 99%
“…Recently, four-wave mixing (FWM) has been studied as new method for the generation of ultrashort pulses, including few-cycle pulses, with a spectral range from deep-UV (DUV) to mid-IR [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. Among these results, the multicolored laser pulses that can be generated using cascaded four-wave mixing (CFWM) in transparent bulk materials are particularly attractive, due to their ultra-broadband spectral range, large wavelength tunable range and compact configurations [54][55][56][57][58][59][60][61][62][63][64][65][66].…”
Section: Introductionmentioning
confidence: 99%
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