Abstract
We report the development of a high-sensitivity time-resolved infrared and Raman spectrometer with exceptional experimental flexibility based on a 10-kHz synchronized dual-arm femtosecond and picosecond laser system. Ultrafast high-average-power titanium sapphire lasers and optical parametric amplifiers provide wavelength tuning from the ultraviolet (UV) to the mid-infrared region. Customized silicon, indium gallium arsenide, and mercury cadmium telluride linear array detectors are provided to monitor the probe laser intensity in the UV to mid-infrared wavelength range capable of measuring changes in sample absorbance of AOD ∼ 10-5 in 1 second. The system performance is demonstrated for the time-resolved infrared, two-dimensional (2D) infrared, and femtosecond stimulated Raman spectroscopy techniques with organometallic intermediates, organic excited states, and the dynamics of the tertiary structure of DNA.
Original language | English |
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Pages (from-to) | 1311-1319 |
Number of pages | 9 |
Journal | Applied Spectroscopy |
Volume | 64 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2010 |
Externally published | Yes |
Keywords
- 2DIK
- Femtosecond stimulated raman spectroscopy
- Index headings
- Instrumentation
- Raman spectroscopy
- Spectrometer
- Time-resolved spectroscopy
- Two-dimensional infrared spectroscopy
ASJC Scopus subject areas
- Instrumentation
- Spectroscopy