Abstract

We have experimentally observed, for the first time to our knowledge, wave-front reconstruction by backward-stimulated Raman scattering (BSRS) in a multimode graded-index fiber. The wave-front reconstruction was quantitatively verified by experiments on beam collimation, intensity distribution, and aberration correction of the BSRS after the beam passed through an aberrator. Polarization experiments also showed that, for a BSRS beam, the sense of circular polarization is nearly identical to that of the incident beam. An interesting aspect of this observation is that, even though the pump excited a large number of modes, the BSRS process appeared to be single-mode-like, and wave-front reconstruction was accomplished.

© 1997 Optical Society of America

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References

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  1. B. Y. Zeldovich, “Connection between the wavefronts of the reflected and exciting light in stimulated Mandel'shtam–Brillouin scattering,” Sov. Phys. JETP 15, 109 (1972).
  2. B. Y. Zeldovich, “Wavefront reproduction in stimulated Raman scattering,” Sov. J. Quantum Electron. 7, 610 (1977).
    [CrossRef]
  3. A. D. Kudryavtseva, “Reconstruction of the laser wavefront by stimulated scatterings inthe pico-second range,” Opt. Commun. 26, 446 (1978).
    [CrossRef]
  4. A. I. Sokolovskaya, “Restoration of wavefront of light beams during stimulated Raman scattering,” Sov. Phys. Dokl. 22, 156 (1977).
  5. N. R. Islam and K. Sakuda, “Wavefront reconstruction via backward stimulated Raman scattering in multimode graded-index (GI) optical fiber,” in Nonlinear Guided Waves and Their Applications, Vol. 15 of 1996 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1996), paper SuA6.
  6. V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
    [CrossRef]
  7. R. Mays and R. J. Lysiak, “Phase conjugated wavefronts by stimulated Brillouin and Raman scattering,” Opt. Commun. 31, 89 (1979).
    [CrossRef]

1979 (1)

R. Mays and R. J. Lysiak, “Phase conjugated wavefronts by stimulated Brillouin and Raman scattering,” Opt. Commun. 31, 89 (1979).
[CrossRef]

1978 (1)

A. D. Kudryavtseva, “Reconstruction of the laser wavefront by stimulated scatterings inthe pico-second range,” Opt. Commun. 26, 446 (1978).
[CrossRef]

1977 (3)

A. I. Sokolovskaya, “Restoration of wavefront of light beams during stimulated Raman scattering,” Sov. Phys. Dokl. 22, 156 (1977).

V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

B. Y. Zeldovich, “Wavefront reproduction in stimulated Raman scattering,” Sov. J. Quantum Electron. 7, 610 (1977).
[CrossRef]

1972 (1)

B. Y. Zeldovich, “Connection between the wavefronts of the reflected and exciting light in stimulated Mandel'shtam–Brillouin scattering,” Sov. Phys. JETP 15, 109 (1972).

Bespalov, V. I.

V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Betin, A. A.

V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Islam, N. R.

N. R. Islam and K. Sakuda, “Wavefront reconstruction via backward stimulated Raman scattering in multimode graded-index (GI) optical fiber,” in Nonlinear Guided Waves and Their Applications, Vol. 15 of 1996 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1996), paper SuA6.

Kudryavtseva, A. D.

A. D. Kudryavtseva, “Reconstruction of the laser wavefront by stimulated scatterings inthe pico-second range,” Opt. Commun. 26, 446 (1978).
[CrossRef]

Lysiak, R. J.

R. Mays and R. J. Lysiak, “Phase conjugated wavefronts by stimulated Brillouin and Raman scattering,” Opt. Commun. 31, 89 (1979).
[CrossRef]

Mays, R.

R. Mays and R. J. Lysiak, “Phase conjugated wavefronts by stimulated Brillouin and Raman scattering,” Opt. Commun. 31, 89 (1979).
[CrossRef]

Pasmanik, G. A.

V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Sakuda, K.

N. R. Islam and K. Sakuda, “Wavefront reconstruction via backward stimulated Raman scattering in multimode graded-index (GI) optical fiber,” in Nonlinear Guided Waves and Their Applications, Vol. 15 of 1996 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1996), paper SuA6.

Sokolovskaya, A. I.

A. I. Sokolovskaya, “Restoration of wavefront of light beams during stimulated Raman scattering,” Sov. Phys. Dokl. 22, 156 (1977).

Zeldovich, B. Y.

B. Y. Zeldovich, “Wavefront reproduction in stimulated Raman scattering,” Sov. J. Quantum Electron. 7, 610 (1977).
[CrossRef]

B. Y. Zeldovich, “Connection between the wavefronts of the reflected and exciting light in stimulated Mandel'shtam–Brillouin scattering,” Sov. Phys. JETP 15, 109 (1972).

Opt. Commun. (2)

A. D. Kudryavtseva, “Reconstruction of the laser wavefront by stimulated scatterings inthe pico-second range,” Opt. Commun. 26, 446 (1978).
[CrossRef]

R. Mays and R. J. Lysiak, “Phase conjugated wavefronts by stimulated Brillouin and Raman scattering,” Opt. Commun. 31, 89 (1979).
[CrossRef]

Radiophys. Quantum Electron. (1)

V. I. Bespalov, A. A. Betin, and G. A. Pasmanik, “Experimental investigation of the threshold of the stimulated scattering (SS) of multimode light beams and the degree of regeneration of the pumping in scattered radiation,” Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Sov. J. Quantum Electron. (1)

B. Y. Zeldovich, “Wavefront reproduction in stimulated Raman scattering,” Sov. J. Quantum Electron. 7, 610 (1977).
[CrossRef]

Sov. Phys. Dokl. (1)

A. I. Sokolovskaya, “Restoration of wavefront of light beams during stimulated Raman scattering,” Sov. Phys. Dokl. 22, 156 (1977).

Sov. Phys. JETP (1)

B. Y. Zeldovich, “Connection between the wavefronts of the reflected and exciting light in stimulated Mandel'shtam–Brillouin scattering,” Sov. Phys. JETP 15, 109 (1972).

Other (1)

N. R. Islam and K. Sakuda, “Wavefront reconstruction via backward stimulated Raman scattering in multimode graded-index (GI) optical fiber,” in Nonlinear Guided Waves and Their Applications, Vol. 15 of 1996 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1996), paper SuA6.

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Figures (6)

Fig. 1
Fig. 1

Experimental configuration for WFR by BSRS. M's, mirrors.

Fig. 2
Fig. 2

Comparison of pump and BSRS signal transmission through the aperture in the absence and in the presence of an aberrator. Open squares, intensity in the absence of the aberrator in the beam path; filled square and rectangle, intensity in the presence of the aberrator in the beam path.

Fig. 3
Fig. 3

Images of FR pump and BSRS (a) in the absence and (b) in the presence of the aberrator. The ordinate and the abscissa indicate spatial and spectral distribution, respectively.

Fig. 4
Fig. 4

Mode profiles of (a) the pump at the output of the GI fiber, (b) forward SRS at the output of the fiber, and, (c) BSRS near the input edge of the fiber.

Fig. 5
Fig. 5

Experimental configuration for analysis of the polarization characteristics: M's, mirrors.

Fig. 6
Fig. 6

Relative intensity of BSRS and FR pump in the absence and in the presence of an analyzer–polarizer with a circularly polarized pump beam.

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