Abstract

Backward stimulated Brillouin scattering was used to control the growth of amplified spontaneous emission (ASE), reducing the unwanted emission in a pulse-amplified cw Ti:sapphire laser system from 22% to less than 1 × 10−4 in the final output. Suppression of ASE substantially improved the spectral quality of the laser and broadened the range over which the laser is useful. The output duration was compressed, but the pulse remained nearly transform limited.

© 1996 Optical Society of America

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  1. D. A. Rockwell, IEEE J. Quantum Electron. 24, 1124 (1988).
    [CrossRef]
  2. C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
    [CrossRef]
  3. H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
    [CrossRef]
  4. I. G. Zubarev, S. I. Mikhailov, Sov. J. Quantum Electron. 4, 683 (1974).
    [CrossRef]
  5. G. C. Valley, IEEE J. Quantum Electron. QE-22, 704 (1986).
    [CrossRef]
  6. S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).
  7. J. T. Verdeyen, Laser Electronics (Prentice-Hall, Englewood Cliffs, N.J., 1981), p. 179.
  8. E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
    [CrossRef]
  9. K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
    [CrossRef]
  10. W. Kaiser, M. Maier, in Laser Handbook, F. T. Arecchi, E. O. Schulz-Dubois, ed. (North-Holland, Amsterdam, 1972), Vol. 2, p. 10.
  11. B. Ya. Zel’dovich, N. F. Pilipetskii, V. V. Shkunov, in Optical Phase Conjugation, R. A. Fisher, ed. (Academic, New York, 1983), Sec. V-B, p. 135.
  12. V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
    [CrossRef]

1995

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
[CrossRef]

1993

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

1989

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

1988

D. A. Rockwell, IEEE J. Quantum Electron. 24, 1124 (1988).
[CrossRef]

1986

G. C. Valley, IEEE J. Quantum Electron. QE-22, 704 (1986).
[CrossRef]

1977

V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

1974

S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).

I. G. Zubarev, S. I. Mikhailov, Sov. J. Quantum Electron. 4, 683 (1974).
[CrossRef]

Aggarwal, R. L.

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Akhmanov, S. A.

S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).

Bespalov, V. I.

V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Betin, A. A.

V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Cromwell, E.

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

D’yakov, Yu. E.

S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).

Dane, C. B.

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

Eichler, H. J.

H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
[CrossRef]

Haase, A.

H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
[CrossRef]

Hackel, L. A.

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

Kaiser, W.

W. Kaiser, M. Maier, in Laser Handbook, F. T. Arecchi, E. O. Schulz-Dubois, ed. (North-Holland, Amsterdam, 1972), Vol. 2, p. 10.

Kung, A. H.

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

Lacovara, P.

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Lee, Y. T.

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

Maier, M.

W. Kaiser, M. Maier, in Laser Handbook, F. T. Arecchi, E. O. Schulz-Dubois, ed. (North-Holland, Amsterdam, 1972), Vol. 2, p. 10.

Menzel, R.

H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
[CrossRef]

Mikhailov, S. I.

I. G. Zubarev, S. I. Mikhailov, Sov. J. Quantum Electron. 4, 683 (1974).
[CrossRef]

Neuman, W. A.

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

Norton, M. A.

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

Pasmanik, G. A.

V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Pavlov, L. I.

S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).

Pilipetskii, N. F.

B. Ya. Zel’dovich, N. F. Pilipetskii, V. V. Shkunov, in Optical Phase Conjugation, R. A. Fisher, ed. (Academic, New York, 1983), Sec. V-B, p. 135.

Rockwell, D. A.

D. A. Rockwell, IEEE J. Quantum Electron. 24, 1124 (1988).
[CrossRef]

Sanchez, A.

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Schulz, P. A.

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Shkunov, V. V.

B. Ya. Zel’dovich, N. F. Pilipetskii, V. V. Shkunov, in Optical Phase Conjugation, R. A. Fisher, ed. (Academic, New York, 1983), Sec. V-B, p. 135.

Trickl, T.

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

Valley, G. C.

G. C. Valley, IEEE J. Quantum Electron. QE-22, 704 (1986).
[CrossRef]

Verdeyen, J. T.

J. T. Verdeyen, Laser Electronics (Prentice-Hall, Englewood Cliffs, N.J., 1981), p. 179.

Wall, K. F.

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Ya. Zel’dovich, B.

B. Ya. Zel’dovich, N. F. Pilipetskii, V. V. Shkunov, in Optical Phase Conjugation, R. A. Fisher, ed. (Academic, New York, 1983), Sec. V-B, p. 135.

Zapata, L. E.

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

Zubarev, I. G.

I. G. Zubarev, S. I. Mikhailov, Sov. J. Quantum Electron. 4, 683 (1974).
[CrossRef]

IEEE J. Quantum Electron.

D. A. Rockwell, IEEE J. Quantum Electron. 24, 1124 (1988).
[CrossRef]

C. B. Dane, L. E. Zapata, W. A. Neuman, M. A. Norton, L. A. Hackel, IEEE J. Quantum Electron. 31, 148 (1995).
[CrossRef]

H. J. Eichler, A. Haase, R. Menzel, IEEE J. Quantum Electron. 31, 1265 (1995).
[CrossRef]

G. C. Valley, IEEE J. Quantum Electron. QE-22, 704 (1986).
[CrossRef]

K. F. Wall, P. A. Schulz, R. L. Aggarwal, P. Lacovara, A. Sanchez, IEEE J. Quantum Electron. 29, 1505 (1993).
[CrossRef]

Radiophys. Quantum Electron.

V. I. Bespalov, A. A. Betin, G. A. Pasmanik, Radiophys. Quantum Electron. 20, 544 (1977).
[CrossRef]

Rev. Sci. Instrum.

E. Cromwell, T. Trickl, Y. T. Lee, A. H. Kung, Rev. Sci. Instrum. 60, 2888 (1989).
[CrossRef]

Sov. J. Quantum Electron.

I. G. Zubarev, S. I. Mikhailov, Sov. J. Quantum Electron. 4, 683 (1974).
[CrossRef]

Sov. Phys. JETP

S. A. Akhmanov, Yu. E. D’yakov, L. I. Pavlov, Sov. Phys. JETP 39, 249 (1974).

Other

J. T. Verdeyen, Laser Electronics (Prentice-Hall, Englewood Cliffs, N.J., 1981), p. 179.

W. Kaiser, M. Maier, in Laser Handbook, F. T. Arecchi, E. O. Schulz-Dubois, ed. (North-Holland, Amsterdam, 1972), Vol. 2, p. 10.

B. Ya. Zel’dovich, N. F. Pilipetskii, V. V. Shkunov, in Optical Phase Conjugation, R. A. Fisher, ed. (Academic, New York, 1983), Sec. V-B, p. 135.

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Figures (4)

Fig. 1
Fig. 1

Schematic of the experimental setup: νi, cw laser frequency; ΔνB, Brillouin shift; HR’s, high-reflection mirrors; TFP, thin-film polarizer; G, dispersive grating; PD1, PD2, photodiodes. • and ↕ indicate the state of polarization of the laser beam.

Fig. 2
Fig. 2

Reflectivity (reflected energy divided by input energy) as a function of input energy for the SBS phase-conjugate mirror, showing a SBS threshold of 1.6 mJ and saturation above 8 mJ input. Solid curve, least-squares polynomial fit of the data points. The SBS medium was FC104. The input beam (diameter 2.7 mm) was focused by a f = 30 cm lens into a 45-cm-long SBS cell. The threshold energy was 1.6 mJ. Incident input contained ~7% ASE. The input wavelength was 835 nm.

Fig. 3
Fig. 3

Ti:sapphire amplifier output at 835 nm versus 532-nm pump energy. Filled symbols represent total energy; open symbols represent ASE only. (a) With the phase-conjugate mirror; the line indicates an amplifier slope efficiency of 36%. (b) With the phase-conjugate mirror replaced by a high-reflectivity (R > 99%) dielectric mirror; the curves are least-squares polynomial fits to data. In (b) the total output contained 22% ASE when the pump energy was 300 mJ.

Fig. 4
Fig. 4

Wavelength dependence of output when Exciton LDS 821 dye (3.3 × 10−4 M) was used in the preamplifier. The tuning range was limited by the dye gain and the threshold of the SBS phase-conjugate mirror. ASE energy was below the detectable limit (1 × 10−4) for the entire region.

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