Abstract

We have experimentally demonstrated a laser energy-scaling technique, based on a phase-conjugate oscillator/amplifier scheme that permits the coupling of several parallel amplifiers to form a single coherent output beam. This, is achieved despite dramatic differences in the individual amplifier energies and optical path lengths. When many amplifiers are coupled together, energy can be scaled significantly beyond the limit imposed by the maximum available volume of a single active medium. Although the present demonstration utilized Nd:YAG, this technique is quite general and can be applied to a variety of laser media.

© 1986 Optical Society of America

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References

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  1. For a recent comprehensive review of nonlinear optical phase conjugation, see D. M. Pepper, “Nonlinear optical phase conjugation,” in The Laser Handbook, M. Bass, M. Stitch, eds. (North-Holland, New York, 1985), Vol. 4.
  2. N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
    [CrossRef]
  3. T. R. O’Meara, Opt. Eng. 21, 243 (1982).
  4. V. G. Manishin, G. A. Pasmanik, Sov. J. Quantum Electron. 14, 818 (1984).
    [CrossRef]
  5. D. A. Rockwell, D. N. Garrett, Proc. Soc. Photo-Opt. Instrum. Eng. 122, 187 (1977).
  6. N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).
  7. A. Yariv, Quantum Electronics, 2nd ed. (Wiley, New York, 1975), p. 496.
  8. T. J. Greytak, “Spectrum of light scattered from thermal fluctuations in gases,” Ph.D. dissertation (Massachusetts Institute of Technology, Cambridge, Mass., 1963) (unpublished).
  9. V. S. Starunov, I. L. Fabelinskii, Sov. Phys. Usp. 12, 463 (1970).
    [CrossRef]

1984 (1)

V. G. Manishin, G. A. Pasmanik, Sov. J. Quantum Electron. 14, 818 (1984).
[CrossRef]

1982 (1)

T. R. O’Meara, Opt. Eng. 21, 243 (1982).

1980 (1)

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

1979 (1)

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

1977 (1)

D. A. Rockwell, D. N. Garrett, Proc. Soc. Photo-Opt. Instrum. Eng. 122, 187 (1977).

1970 (1)

V. S. Starunov, I. L. Fabelinskii, Sov. Phys. Usp. 12, 463 (1970).
[CrossRef]

Basov, N. G.

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Efimkov, V. F.

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Fabelinskii, I. L.

V. S. Starunov, I. L. Fabelinskii, Sov. Phys. Usp. 12, 463 (1970).
[CrossRef]

Garrett, D. N.

D. A. Rockwell, D. N. Garrett, Proc. Soc. Photo-Opt. Instrum. Eng. 122, 187 (1977).

Greytak, T. J.

T. J. Greytak, “Spectrum of light scattered from thermal fluctuations in gases,” Ph.D. dissertation (Massachusetts Institute of Technology, Cambridge, Mass., 1963) (unpublished).

Kotov, A. V.

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Manishin, V. G.

V. G. Manishin, G. A. Pasmanik, Sov. J. Quantum Electron. 14, 818 (1984).
[CrossRef]

Mikhailov, S. I.

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Mironov, A. B.

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

O’Meara, T. R.

T. R. O’Meara, Opt. Eng. 21, 243 (1982).

Okulov, A. Yu.

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

Pasmanik, G. A.

V. G. Manishin, G. A. Pasmanik, Sov. J. Quantum Electron. 14, 818 (1984).
[CrossRef]

Pepper, D. M.

For a recent comprehensive review of nonlinear optical phase conjugation, see D. M. Pepper, “Nonlinear optical phase conjugation,” in The Laser Handbook, M. Bass, M. Stitch, eds. (North-Holland, New York, 1985), Vol. 4.

Rockwell, D. A.

D. A. Rockwell, D. N. Garrett, Proc. Soc. Photo-Opt. Instrum. Eng. 122, 187 (1977).

Smirnov, M. G.

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Starunov, V. S.

V. S. Starunov, I. L. Fabelinskii, Sov. Phys. Usp. 12, 463 (1970).
[CrossRef]

Yariv, A.

A. Yariv, Quantum Electronics, 2nd ed. (Wiley, New York, 1975), p. 496.

Zubarev, I. G.

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Opt. Eng. (1)

T. R. O’Meara, Opt. Eng. 21, 243 (1982).

Proc. Soc. Photo-Opt. Instrum. Eng. (1)

D. A. Rockwell, D. N. Garrett, Proc. Soc. Photo-Opt. Instrum. Eng. 122, 187 (1977).

Sov. J. Quantum Electron. (2)

V. G. Manishin, G. A. Pasmanik, Sov. J. Quantum Electron. 14, 818 (1984).
[CrossRef]

N. G. Basov, V. F. Efimkov, I. G. Zubarev, A. V. Kotov, A. B. Mironov, S. I. Mikhailov, M. G. Smirnov, Sov. J. Quantum Electron. 9, 455 (1979).
[CrossRef]

Sov. Phys. JETP (1)

N. G. Basov, I. G. Zubarev, A. B. Mironov, S. I. Mikhailov, A. Yu. Okulov, Sov. Phys. JETP 52, 847 (1980).

Sov. Phys. Usp. (1)

V. S. Starunov, I. L. Fabelinskii, Sov. Phys. Usp. 12, 463 (1970).
[CrossRef]

Other (3)

A. Yariv, Quantum Electronics, 2nd ed. (Wiley, New York, 1975), p. 496.

T. J. Greytak, “Spectrum of light scattered from thermal fluctuations in gases,” Ph.D. dissertation (Massachusetts Institute of Technology, Cambridge, Mass., 1963) (unpublished).

For a recent comprehensive review of nonlinear optical phase conjugation, see D. M. Pepper, “Nonlinear optical phase conjugation,” in The Laser Handbook, M. Bass, M. Stitch, eds. (North-Holland, New York, 1985), Vol. 4.

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Figures (2)

Fig. 1
Fig. 1

Experimental arrangement used to demonstrate coherent coupling of parallel gain media using phase conjugation. Inserting mirror and tilted apertures as indicated provides a reference beam for comparison purposes.

Fig. 2
Fig. 2

Far-field intensity profiles of (a), (b) the reference beam and (c), (d) the phase-conjugate beam. Introducing a phase shift changes the pointing direction of the reference beam, as shown in (a) and (b), but not of the phase-conjugate beam, as shown in (c) and (d).

Equations (2)

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Δ ϕ = 2 π Δ L λ Δ ν B ν rad ,
Δ ν B = 2 n λ v s ,

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