Light-induced dispersed vibrational IR-emission: a new technique to study molecular states
Institute of Cell Biophysics Russian Academy of Sciences, Pushchino, Moscow region, Institutskay st.3, 142290 Russia; Phone: +(4967)739393; Fax:+(4967) 330509, Olga_degt@mail.ru
Infrared Emission Spectroscopy, technique rarely applied in the past. Most of previous studies were carried out on gases or condensed phases by heating the specimen to a high temperature by means of electrical heating element. By using of FT-IR technique we developed a new approach of light-induced infrared emission spectroscopy, which is a method based on generation of infrared radiation in the absence of sample heating. The emission spectra were recorded during steady state illumination with visible light with a power of 10- 450 mW/cm2. The IR-radiation usually was trapped from a front surface of the sample. Some interesting features of this method are:
There is promise that this nonlinear IR method will have important application in determining the structure and dynamics molecules. We plan to discuss it in our presentation.
 Gagarinov A.G., Degtyareva O.V., Khodonov A.A., Terpugov E.L., Stimulated infrared emission in all-trans retinal and wild-type bacteriorhodopsin under CW optical pumping: studies by FT-IR spectroscopy // Vibrational Spectr.. 42, (2006). Pp.231-238.
 A. Akhmanov and N.I. Koroteev. Methods of Nonlinear Optics and Light Scattering Spectroscopy // Moscow, Nauka, (1981). 586 pages.