Title :
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
fDate :
7/1/2009 12:00:00 AM
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;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2009.2013121
