ULTRA: A Unique Instrument for Time-Resolved Spectroscopy

作者：Greetham Gregory M^*; Burgos Pierre; Cao Qian; Clark Ian P; Codd Peter S; Farrow Richard C; George Michael W; Kogimtzis Moschos; Matousek Pavel; Parker Anthony W; Pollard Mark R; Robinson David A; Xin Zhi Jun; Towrie Michael

来源：Applied Spectroscopy, 2010, 64(12): 1311-1319.

DOI：10.1366/000370210793561673

• Two-dimensional infrared spectroscopy
• 2DIR
• Raman spectroscopy
• Time resolved spectroscopy
• Femtosecond stimulated Raman spectroscopy
• Spectrometer
• Instrumentation

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 Delta OD similar to 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

• 出版日期2010-12