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

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

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 pulse...

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Veröffentlicht in:IEEE journal of quantum electronics 2009-07, Vol.45 (7), p.777-782
Hauptverfasser: Schlup, P., Wilson, J.W., Bartels, R.A.
Format: Artikel
Sprache:eng
Schlagworte:
Exact sciences and technology
Excitation
Fourier transforms
Fundamental areas of phenomenology (including applications)
Noise
Nonlinear optics
Optical interferometry
Optical pulses
Optical scattering
Optics
Phase detection
Phases
Physics
Probes
Pumps
Quantum electronics
Raman scattering
Raman spectroscopy
Spectroscopy
Temporal logic
Ultrafast optics
Ultrafast processes
optical pulse generation and pulse compression
Vibration measurement
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Beschreibung
Zusammenfassung: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.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2009.2013121