Index Catalog // ScholarsArchive@OSU

Creator:: Frontiera, Renee R., Fang, Chong, Dasgupta, Jyotishman, and Mathies, Richard A.
Abstract:: Mapping out multidimensional potential energy surfaces has been a goal of physical chemistry for decades in the quest to both predict and control chemical reactivity. Recently a new spectroscopic approach called Femtosecond Stimulated Raman Spectroscopy or FSRS was introduced that can structurally interrogate multiple dimensions of a reactive potential energy...
Resource Type:: Article
Full Text:: involve stretching of the carbon p-backbone, and no predominately nitrogen stretching modes are enhanced

Creator:: Liu, Weimin, Zhu, Liangdong, and Fang, Chong
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...
Resource Type:: Article
Full Text:: a delay stage and is attenuated by a variable neutral density filter. The two p-polarized beams are

Creator:: Liu, Weimin, Zhu, Liangdong, Wang, Liang, and Fang, Chong
Abstract:: We demonstrate the versatile broadband wavelength tunability of frequency upconverted multicolor cascaded fourwave-mixing (CFWM) signals spanning the continuous wavelength range from UV to near IR in a thin type-I BBO crystal using 35 fs, 800 nm fundamental and chirped IR supercontinuum white light pulses. Two sets of spatially dispersed CFWM...
Resource Type:: Article
Full Text:: are both p polarized and loosely focused onto a 0.1 mm thick BBO crystal Fig. 1. (a) Photograph of

Creator:: Zhu, Liangdong, Liu, Weimin, and Fang, Chong
Abstract:: We demonstrate the generation of broadband up-converted multicolor array (BUMA) in a thin BK7 glass slide using two noncollinear weak near-IR laser pulses with various crossing angles. The BUMA signal arises from cubic nonlinear χ⁽³⁾:χ⁽³⁾ processes via cascaded four-wave mixing of the two incident beams. Broad and continuous tunability of...
Resource Type:: Article
Full Text:: . Instrum. 74, 1 (2003). 7R. Nietzke, P. Fenz, W. Elsasser, and E. O. Gobel, Appl. Phys. Lett. 51, 1298

Creator:: Han, Fangyuan, Liu, Weimin, and Fang, Chong
Abstract:: We use femtosecond stimulated Raman spectroscopy (FSRS) to illuminate the choreography of intermolecular excited-state proton transfer (ESPT) of photoacid pyranine (8-hydroxypyrene-1,3,6-trisulfonic acid, HPTS) in water. The multidimensional reaction coordinate responsible for photoacidity is revealed to involve sequential activation of characteristic skeletal motions during the ca. 1 ps preparation stage preceding...
Resource Type:: Article
Full Text:: University, Corvallis, OR 97331 U.S.A. *Corresponding author. Tel.: +1 541 737 6704. E-mail address

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