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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 2, Iss. 4 — Apr. 1, 1985
  • pp: 640–648

Time-domain coherent active Raman spectroscopy of a free-nitrogen jet

S. A. Akhmanov, N. I. Koroteev, S. A. Magnitskii, V. B. Morozov, A. P. Tarasevich, and V. G. Tunkin  »View Author Affiliations


JOSA B, Vol. 2, Issue 4, pp. 640-648 (1985)
http://dx.doi.org/10.1364/JOSAB.2.000640


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Abstract

A review of our results in time-domain coherent anti-Stokes Raman spectroscopy (CARS) of N2 molecules cooled in a supersonic jet is given. A full quantitative interpretation of the detected quantum beats, which makes it possible to determine the Trot of N2, is proposed. A noticeable increase of the dephasing cross section with the lowering of temperature is detected. The sensitivity of the CARS spectrometer was radically improved by the development of the injection-locked optical parametric oscillator, which made it possible to register the cooling of N2 to temperatures as low as 8 K.

© 1985 Optical Society of America

Citation
S. A. Akhmanov, N. I. Koroteev, S. A. Magnitskii, V. B. Morozov, A. P. Tarasevich, and V. G. Tunkin, "Time-domain coherent active Raman spectroscopy of a free-nitrogen jet," J. Opt. Soc. Am. B 2, 640-648 (1985)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-2-4-640


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References

  1. R. G. Brewer, "Coherent optical spectroscopy," in Nonlinear Spectroscopy, N. Bloembergen, ed. (North-Holland, Amsterdam, 1977).
  2. P. Shoemaker, "Coherent infrared spectroscopy of nonstationary processes," in Laser and Coherent Spectroscopy, J. Steinfeld, ed. (Plenum, New York, 1978).
  3. A. Laubereau and W. Kaiser, "Vibrational dynamics of liquids and solids investigated by picosecond light pulses," Rev. Mod. Phys. 50, 607–665 (1978).
  4. S. A. Akhmanov and N. I. Koroteev, Methods of Nonlinear Optics in Light Scattering Spectroscopy (Nauka, Moscow, 1981).
  5. M. S. Dzhidzhoev, S. A. Magnitskii, S. M. Saltiel, A. P. Tarasevich, V. G. Tunkin, and A. I. Kholodnykh, "Elimination of nonresonant background in coherent picosecond active Raman spectroscopy of molecular gases," Kvantovaya Elektron. (Moscow), 8, 1136–1138 (1981).
  6. S. A. Magnitskii and V. G. Tunkin, "Registration of Dicke narrowing in gaseous hydrogen by direct measurement of dephasing time," Sov. J. Quantum Electron. 11, 1218–1220 (1981).
  7. Yu. E. Dyakov, S. A. Krikunov, S. A. Magnitskii, S. Yu. Nikitin, and V. G. Tunkin, "Time-domain coherent anti-Stokes Raman spectroscopy of gaseous hydrogen in the Dicke narrowing region," Zh. Eksp. Teor. Fiz. 84, 2013–2025 (1983).
  8. S. A. Akhmanov, N. I. Koroteev, S. A. Magnitskii, V. B. Morozov, A. P. Tarasevich, and V. G. Tunkin, "Nonstationary picosecond CARS of molecular gases, III. Symposium on ultrafast phenomena, Minsk, October 1983," Izvestia Akad. Nauk SSSR, 48, 534–539 (1984).
  9. Yu. E. Dyakov, "Dephasing effects in stationary and nonstationary spectroscopy," Pis'ma Zh. Eksp. Teor. Fiz. 37, 14–17 (1983).
  10. S. A. Akhmanov, N. I. Koroteev, S. A. Magnitskii, V. B. Morozov, A. P. Tarasevich, and V. G. Tunkin, "Vibrational dephasing kinetics of N2 molecules in supersonic stream," Pis'ma Zh. Eksp. Teor. Fiz. 39, 409–412 (1984).
  11. O. P. Judd and J. Lyman, "Interpretation of measurements of collisionless intramolecular energy transfer and dephasing rates for SF6," Opt. Lett. 6, 595–597 (1981).
  12. S. A. Magnitskii, V. I. Malachova, A. P. Tarasevich, V. G. Tunkin, B. G. Shakirov, S. D. Yakubovich, and D. V. Yakovlev, "Production of bandwidth-limited tunable picosecond pulses by injection-locked optical parametric oscillator," Opt. Lett, (to be published).
  13. V. I. Malachova, A. A. Rivlin, Yu. A. Tandiev, and S. D. Yakubovich, "Stationary single-mode generation in injection semiconductor laser with nonselective resonator," Kvantovaya Elektron. (Moscow) 7, 1252–1254 (1980).
  14. S. G. Rautian and I. I. Sobelman, "The influence of collisions on Doppler broadening of spectral lines," Usp. Fiz. Nauk 90, 209–236 (1966).
  15. We can, of course, neglect time-of-flight effects. Indeed, the maximum speed of the stream is less than 1 μm/nsec, while the diameter of the excited volume is about 100 μm. (In our case it is the dimensions of the excited volume that are of importance rather than those of the probed volume, which was 20 μm in diameter.) The absence of mean decay in Fig. 6 and Figs. 7A, 7C, and 7D proves directly that we do not have to take the time-of-flight effects into account and that our delay line is aligned well (see also the dephasing curve of H2 in Fig. 2).
  16. N. V. Karelov and R. G. Sharafutdinov, "Rotational relaxation in condensing gas stream," in Molecular Gas Dynamics, Proceedings of All-Soviet Conference on Rarefied Gas Dynamics (Novosibirsk State U. Publishing House, Novosibirsk, 1980), Vol. 3, pp. 28–33.
  17. R. G. Sharafutdinov, "Rotational relaxation of gases in free jets," Doctoral dissertation (Institute for Thermal Physics, Novosibirsk, 1984).
  18. J. O. Hirschfelder, C. F. Curtiss, and R. B. Bird, Molecular Theory of Gases and Liquids (Wiley, New York, 1954).
  19. B. F. Gordiez, A. I. Osipov, and A. Å. Shelepin, Gaseous Kinetics and Molecular Lasers (Nauka, Moscow, 1980).
  20. D. H. Levy, "Supersonics molecular beams and Van der Waals molecules," in Quantum Dynamics of Molecules, R. J. Woolley, ed. (Plenum, New York, 1980).
  21. n is not so sensitive to condensation as T. See, for example, Ref. 16 or Ref. 17.
  22. πσ2deph values are obtained with more accuracy than in Ref. 10, where πσ2deph was calculated with T of isentropic expansion in spite of Trot (see the difference between T and Trot in Fig. 8).
  23. H. Graener, A. Laubereau, and J. W. Nibler, "Picosecond coherent anti-Stokes Raman spectroscopy of molecules in free jet expansion," Opt. Lett. 9, 165–167 (1984).
  24. A. N. Brodnikovsky, S. M. Gladkov, and N. I. Koroteev, "Strong selective excitation of Raman active vibrations and energy transfer between low-lying vibrational states of a CO2 molecule studied by CARS and PARS," Opt. Commun. 40, 312–314 (1982).

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