scholarly journals Reactive Intermediates in the Room Temperature Rhodopsin Photo-Reactions: Picosecond Time-Resolved Cars

1999 ◽  
Vol 19 (1-4) ◽  
pp. 127-132 ◽  
Author(s):  
George H. Atkinson ◽  
Frank Jäger ◽  
Laszlo Ujj
Keyword(s):  
Raman Spectroscopy ◽  
Vibrational Spectra ◽  
Room Temperature ◽  
Reactive Intermediates ◽  
Time Resolved ◽  
Anti Stokes

The vibrational spectra of the batho and lumi intermediates in the room-temperature rhodopsin photo-reaction are measured by picosecond time-resolved coherent anti-Stokes Raman spectroscopy (PTR/CARS). The instrumental principles underlying PTR/ CARS together with the advantages of PTR/CARS applications in protein reactions are discussed.

Molecular vibrational dynamics in PMMA studied by femtosecond CARS

2014 ◽  
Vol 28 (28) ◽  
pp. 1450222 ◽  
Author(s):  
Yang Zhao ◽  
Sheng Zhang ◽  
Boyang Zhou ◽  
Rongwei Fan ◽  
Deying Chen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Room Temperature ◽  
Relaxation Times ◽  
Vibrational Dynamics ◽  
Time Resolved ◽  
Raman Modes ◽  
Anti Stokes

The ultrafast molecular vibrational dynamics in PMMA sheets is studied by femtosecond time-resolved coherent anti-Stokes Raman spectroscopy at room temperature. The C – H stretch modes at 2870 cm-1 and 3008 cm-1 in PMMA sheets are excited and detected. The coherence relaxation times and beat wavenumbers of the Raman modes are obtained.

scholarly journals New Trends in Raman Spectroscopy: From High-Resolution Geochemistry to Planetary Exploration

Elements ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Olivier Beyssac
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Signal ◽  
Time Resolved ◽  
The Earth ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Anti Stokes ◽  
Near Future ◽  
Very High

This article reviews nonconventional Raman spectroscopy techniques and discusses present and future applications of these techniques in the Earth and planetary sciences. Time-resolved spectroscopy opens new ways to limit or exploit luminescence effects, whereas techniques based on coherent anti-Stokes Raman scattering (CARS) or surface-enhanced Raman spectroscopy (SERS) allow the Raman signal to be considerably enhanced even down to very high spatial resolutions. In addition, compact portable Raman spectrometers are now routinely used out of the laboratory and are even integrated to two rovers going to Mars in the near future.

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