Abstract

Optical-to-optical conversion efficiencies of as high as 32% with a slope efficiency of 44% were obtained with a novel diode-bar, side-pumped laser cavity design. A slab geometry with a single, high-angle-of-incidence reflection was used to extract gain from near the pump face of a Nd:YVO4 bar that absorbed strongly at the pump wavelength. Small-signal gains of greater than 8 cm−1 and pulse energies of as much as 3.2 mJ were obtained in an almost TEM00 mode. Aperturing effects by the laser rod were found to limit the effects of nonuniform gain on the laser mode.

© 1993 Optical Society of America

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References

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1992 (3)

1991 (2)

1990 (1)

T. Y. Fan, A. Sanchez, IEEE J. Quantum Electron. 26, 311 (1990).
[CrossRef]

1989 (1)

1987 (1)

1985 (1)

D. L. Sipes, Appl. Phys. Lett. 47, 74 (1985).
[CrossRef]

1977 (1)

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

1966 (1)

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

Baer, T. M.

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

Beach, R.

Benett, W.

Birnbaum, M.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Burnham, R.

Burnham, R. L.

Chan, K.

Davin, J.

Dinerman, B. J.

Erler, J. W.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Fan, T. Y.

T. Y. Fan, A. Sanchez, IEEE J. Quantum Electron. 26, 311 (1990).
[CrossRef]

Fincher, C. L.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Freitas, B.

Gooding, P.

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

Hays, A. D.

Head, D. F.

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

Hutchison, S.

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

Kaz, A.

Kintz, G. J.

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

Marshall, L. R.

Mitchell, S.

O’Connor, J. R.

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

Rines, D. M.

Sanchez, A.

T. Y. Fan, A. Sanchez, IEEE J. Quantum Electron. 26, 311 (1990).
[CrossRef]

Shannon, D. C.

Sipes, D. L.

D. L. Sipes, Appl. Phys. Lett. 47, 74 (1985).
[CrossRef]

Solarz, R.

Tucker, A. W.

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Wallace, R. W.

Welford, D.

Appl. Opt. (1)

Appl. Phys. Lett. (2)

J. R. O’Connor, Appl. Phys. Lett. 9, 407 (1966).
[CrossRef]

D. L. Sipes, Appl. Phys. Lett. 47, 74 (1985).
[CrossRef]

IEEE J. Quantum Electron. (2)

T. Y. Fan, A. Sanchez, IEEE J. Quantum Electron. 26, 311 (1990).
[CrossRef]

T. M. Baer, D. F. Head, P. Gooding, G. J. Kintz, S. Hutchison, IEEE J. Quantum Electron. 28, 1131 (1992).
[CrossRef]

J. Appl. Phys. (1)

A. W. Tucker, M. Birnbaum, C. L. Fincher, J. W. Erler, J. Appl. Phys. 48, 4907 (1977).
[CrossRef]

Opt. Lett. (5)

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Figures (2)

Fig. 1
Fig. 1

Experimental arrangement (top view). θ is the angle between the beam, external to the crystal, and the pump face. The c axis of the Nd:YVO4 laser rod was oriented perpendicular to the plane of the figure.

Fig. 2
Fig. 2

Output energy as a function of the pump energy from the diode laser. Results are shown for external angles θ of 4° (solid curves) and 10° (dotted curves) at output coupler reflectivities of R2 = 0.475, 0.815, and 0.985.

Tables (1)

Tables Icon

Table 1 Experimental and Calculated Small-Signal Gains for Nd:YVO4 at 4° and 10°

Equations (2)

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g ( T p ) = σ N u ( T p ) = σ λ p ( Q E ) f B τ u P p h c [ 1 - exp ( - T p / τ u ) ] ,
P p = P 0 α p 2 L p ω exp ( - α p d av ) erf ( 2 ω y 0 ) .

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