Sensitive and Selective Detection of Low-Frequency Vibrational Modes Through a Phase-Shifting Fourier Transform Spectroscopy

Author

Schlup, Philip ; Wilson, Jesse W. ; Bartels, Randy A.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado State Univ., Fort Collins, CO

Volume

45

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

777

Lastpage

782

Abstract

We introduce a sensitive technique for the measurement of impulsively excited vibrational Raman modes. A linear sweep in the instantaneous frequency of the probe pulse isolates Raman sidebands from noise, enhancing sensitivity. The temporal interference between two stretched, time-delayed pump pulses allows us to selectively excite specific modes. The method is shown to be applicable to different phases of the samples.

Keywords

Fourier transform spectroscopy; phase shifting interferometry; vibrational modes; Raman sidebands; linear sweep; low-frequency vibrational modes; phase-shifting Fourier transform spectroscopy; probe pulse; temporal interference; time-delayed pump pulses; vibrational Raman modes; Fourier transforms; Optical interferometry; Optical pulses; Optical scattering; Phase detection; Probes; Raman scattering; Spectroscopy; Ultrafast optics; Vibration measurement; Raman scattering; Raman spectroscopy; ultrafast optics; vibration measurement;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2009.2013121

Filename

5037992