Abstract

An output coupler with radially variable reflectivity, based on a Fabry–Perot interferometer made of two suitable spherical mirrors, is proposed. Application to a pulsed Nd:YAG laser with an unstable resonator has produced diffraction-limited output beams with energy up to 300 mJ.

© 1987 Optical Society of America

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References

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  1. A. E. Siegman, R. W. Arrathon, IEEE J. Quantum Electron. QE-3, 156 (1967).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef] [PubMed]

1986 (1)

1985 (3)

1984 (2)

1982 (2)

1980 (1)

1977 (1)

1976 (1)

1975 (1)

A. Yariv, P. Yeh, Opt. Commun. 13, 370 (1975).
[CrossRef]

1970 (1)

H. Zucker, Bell Syst. Tech. J. 49, 2349 (1970).

1967 (1)

A. E. Siegman, R. W. Arrathon, IEEE J. Quantum Electron. QE-3, 156 (1967).
[CrossRef]

1965 (1)

N. G. Vakhimov, Radio Eng. Electr. Phys. 10, 1439 (1965).

Armandillo, E.

Arrathon, R. W.

A. E. Siegman, R. W. Arrathon, IEEE J. Quantum Electron. QE-3, 156 (1967).
[CrossRef]

Born, M.

M. Born, E. Wolf, Principles of Optics (Pergamon, Oxford, 1970), p. 325.

Byer, R. L.

Chodzko, R. A.

Cross, E. F.

De Silvestri, S.

S. De Silvestri, P. Laporta, V. Magni, “Laser output coupler based on a radially variable interferometer,” submitted to Appl. Opt. (1986).

Dente, G. C.

Docchio, F.

Erkkila, J. H.

Ferguson, T. R.

Giuliani, G.

Knight, L. V.

Laporta, P.

S. De Silvestri, P. Laporta, V. Magni, “Laser output coupler based on a radially variable interferometer,” submitted to Appl. Opt. (1986).

Latham, W. P.

Lavigne, P.

Magni, V.

S. De Silvestri, P. Laporta, V. Magni, “Laser output coupler based on a radially variable interferometer,” submitted to Appl. Opt. (1986).

Mason, S. B.

McCarthy, N.

Pallaro, L.

Park, Y. K.

Paxton, A. H.

Salvi, T. C.

Siegman, A. E.

A. E. Siegman, R. W. Arrathon, IEEE J. Quantum Electron. QE-3, 156 (1967).
[CrossRef]

Smithers, M. E.

Svelto, O.

Vakhimov, N. G.

N. G. Vakhimov, Radio Eng. Electr. Phys. 10, 1439 (1965).

Walsh, D. M.

Wolf, E.

M. Born, E. Wolf, Principles of Optics (Pergamon, Oxford, 1970), p. 325.

Yariv, A.

A. Yariv, P. Yeh, Opt. Commun. 13, 370 (1975).
[CrossRef]

Yeh, P.

A. Yariv, P. Yeh, Opt. Commun. 13, 370 (1975).
[CrossRef]

Zucker, H.

H. Zucker, Bell Syst. Tech. J. 49, 2349 (1970).

Appl. Opt. (5)

Bell Syst. Tech. J. (1)

H. Zucker, Bell Syst. Tech. J. 49, 2349 (1970).

IEEE J. Quantum Electron. (1)

A. E. Siegman, R. W. Arrathon, IEEE J. Quantum Electron. QE-3, 156 (1967).
[CrossRef]

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. A (1)

Opt. Commun. (1)

A. Yariv, P. Yeh, Opt. Commun. 13, 370 (1975).
[CrossRef]

Opt. Lett. (4)

Radio Eng. Electr. Phys. (1)

N. G. Vakhimov, Radio Eng. Electr. Phys. 10, 1439 (1965).

Other (2)

M. Born, E. Wolf, Principles of Optics (Pergamon, Oxford, 1970), p. 325.

S. De Silvestri, P. Laporta, V. Magni, “Laser output coupler based on a radially variable interferometer,” submitted to Appl. Opt. (1986).

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Figures (4)

Fig. 1
Fig. 1

Schematic of the RAVI. S1 is chosen plane and S2 convex, d(o) is the spacing at the center, and the radius of curvature ρ of S2 is such as to produce zero reflectivity at the radial distance a.

Fig. 2
Fig. 2

Reflectivity profiles of the RAVI as a function of radial distance r from the center, normalized to the rod radius rrod, for two different values of the reflectivity Rs of S1 and S2. Curves a and b correspond to a radius of curvature ρ = −25 m; curves a′ and b′ to ρ = −19 m. For all profiles d(o) was kept equal to an odd number of λ/4, and rrod was 3.2 mm.

Fig. 3
Fig. 3

(a) Near-field and (b) far-field intensity distributions of the beam coupled through the RAVI.

Fig. 4
Fig. 4

Laser output energy as a function of the electrical input energy to the lamp: (□) resonator with the RAVI output coupler; (○) resonator with a 30% reflectivity mirror of uniform reflectivity profile.

Equations (5)

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R = 4 R s sin 2 ( δ / 2 ) ( 1 - R s ) 2 + 4 R s sin 2 ( δ / 2 ) .
δ = ( 4 π / λ ) d ( r ) ,
d ( r ) = d ( o ) - r 2 2 ρ ,
ρ = 2 a 2 / λ .
d ( o ) c / ( 2 Δ ν osc ) .

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