All‐solid‐state stimulated Raman scattering‐based source of pulsed radiation tunable in 345–625 and 690–1250 nm ranges for spectroscopic applications

The generation characteristics of a barium nitrate Raman laser with pumping by a narrowband tunable nanosecond (tp 9 ns) Ti : Sapphire laser were studied for the first time. The generation of the first three Stokes components of stimulated Raman scattering (SRS) and their second harmonics was obtained with a spectral linewidth of <0.4 cm 1 and tuning ranges 930‐1250 and 465‐625 nm. The efficiencies of energy conversion obtained for the first, second and third SRS components were h1s = 60%, h2s = 49% and h3s = 33%, respectively. On the basis of the investigated barium nitrate Raman laser, an all-solid-state laser system was built for various spectroscopic applications, which provides powerful narrowband pulsed radiation tunable in the spectral ranges 345‐625 and 690‐1250 nm. The applicability of the constructed laser system in Raman spectroscopy was successfully tested by performing a saturation resonance Raman experiment on nickel porphyrin in water solution. Copyright ” 2000 John Wiley & Sons, Ltd.

[1]  Y. Mizutani,et al.  Time-resolved resonance Raman study of the primary photoprocesses of nickel(II) octaethylporphyrin in solution , 1997 .

[2]  T. A. King,et al.  Ti/sup 3+/ ion concentration and Ti:sapphire laser performance , 1997 .

[3]  P. Champion,et al.  Probing picosecond processes with nanosecond lasers: Electronic and vibrational relaxation dynamics of heme proteins , 1992 .

[4]  J. Shelnutt,et al.  Photodynamics of nickel porphyrins in noncoordinating solvents: characterization of d-d excited states using transient Raman spectroscopy , 1988 .

[5]  Y. Mizutani,et al.  Direct observation of cooling of heme upon photodissociation of carbonmonoxy myoglobin. , 1997, Science.

[6]  J. Qian,et al.  Separability of Intra- and Intermolecular Vibrational Relaxation Processes in the S1 State of trans-Stilbene , 1997 .

[7]  A. G. Shvedko,et al.  MECHANISM OF EXCIPLEX FORMATION BETWEEN CU-PORPHYRIN AND CALF-THYMUS DNA AS REVEALED BY SATURATION RESONANCE RAMAN SPECTROSCOPY , 1999 .

[8]  Sanford A. Asher,et al.  UV resonance Raman saturation spectroscopy of tryptophan derivatives: photophysical relaxation measurements with vibrational band resolution , 1990 .

[9]  K. Nakamoto,et al.  Electronic spectra, resonance raman spectra and solution properties of water-soluble Cu(II), Ni(II) and Co(III) porphyrins , 1990 .

[10]  W. Jentzen,et al.  Axial Coordination and Conformational Heterogeneity of Nickel(II) Tetraphenylporphyrin Complexes with Nitrogenous Bases. , 1998, Inorganic chemistry.

[11]  H. Hamaguchi,et al.  Microscopic Mechanism of Solute−Solvent Energy Dissipation Probed by Picosecond Time-Resolved Raman Spectroscopy , 1997 .

[12]  Alexander A. Sobol,et al.  Raman spectroscopy of crystals for stimulated Raman scattering , 1999 .

[13]  T. Nakabayashi,et al.  Probe-Wavelength Dependency of Picosecond Anti-Stokes Raman Spectra of trans-Stilbene in the S1 State , 1997 .

[14]  C. Didierjean,et al.  Transient Absorption and Time-Resolved Raman Study of the Photophysics of 4-Phenylpyridine in Solution , 1997 .

[15]  Y. Mizutani,et al.  Intramolecular vibrational energy redistribution and intermolecular energy transfer in the (d, d) excited state of nickel octaethylporphyrin , 1999 .

[16]  A. M. Prokhorov,et al.  Stimulated Raman scattering of laser radiation in Raman crystals , 1999 .

[17]  T. Nakabayashi,et al.  Vibrational Relaxation Dynamics of trans-Stilbene in the Lowest Excited Singlet State. Pump and Probe Wavelength Dependencies of the Picosecond Time-Resolved Anti-Stokes Raman Spectrum , 1998 .

[18]  S. Kruglik,et al.  Resonance Raman, CARS, and Picosecond Absorption Spectroscopy of Copper Porphyrins: The Evidence for the Exciplex Formation with Oxygen-Containing Solvent Molecules , 1995 .