Abstract

A new, highly efficient, scalable technique for cw high-power diode-array side pumping of gain media has been developed. The use of simple all-reflective optics permits diode emission collection efficiencies of >95%. We have achieved a cw TEM00 mode output (M2 < 1.1) of 13.1 W at 1.06 μm from a Nd:YAG rod pumped with 60 W of laser-diode output (808 nm), representing 22% conversion efficiency (29% conversion of absorbed pump power). Numerical simulations and experimental results indicate that good thermal management results in thermally induced aberrations of <λ/8 across the rod.

© 1994 Optical Society of America

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1994 (1)

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

1993 (3)

1992 (5)

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

H. R. Verdún, T. Chuang, Opt. Lett. 17, 1000 (1992).
[Crossref] [PubMed]

H. Ajer, S. Landrø, G. Rustad, K Stenersen, Opt. Lett. 17, 1785 (1992).
[Crossref] [PubMed]

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

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

1991 (1)

1989 (1)

1971 (1)

W. C. Scott, M. de Wit, Appl. Phys. Lett. 18, 3 (1971).
[Crossref]

Ajer, H.

Albrecht, G.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Alcock, A. J.

Baer, T. M.

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

Beach, R.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Benett, W. J.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Bernard, J. E.

Bowers, M. S.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, Opt. Lett. 18, 116 (1993).
[Crossref] [PubMed]

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

Bowman, S. R.

Burnham, R.

Chuang, T.

Comasky, B. J.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Cousins, A. K.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

de Wit, M.

W. C. Scott, M. de Wit, Appl. Phys. Lett. 18, 3 (1971).
[Crossref]

Dinerman, B. J.

Epp, D.

Feldman, B. J.

Flood, C. J.

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

Freitas, B. L.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Gooding, P.

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

Greiner, U. J.

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

Hays, A. D.

Head, D. F.

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

Hutchinson, S.

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

Kintz, G. J.

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

Klingenberg, H. H.

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

Koechner, W.

W. Koechner, Solid-State Laser Engineering, 3rd ed., Vol. 1 of Springer Series in Optical Sciences (Springer-Verlag, Berlin, 1992).

Landrø, S.

Lynn, J. G.

McMahon, J.

Mundinger, D.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Petty, C.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Quarles, G. J.

Riley, K. J.

Rines, D. M.

Rustad, G.

Scott, W. C.

W. C. Scott, M. de Wit, Appl. Phys. Lett. 18, 3 (1971).
[Crossref]

Seamans, J. F.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, Opt. Lett. 18, 116 (1993).
[Crossref] [PubMed]

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

Searles, S. K

Solarz, R. W.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Stenersen, K

Tidwell, S. C.

S. C. Tidwell, J. F. Seamans, M. S. Bowers, Opt. Lett. 18, 116 (1993).
[Crossref] [PubMed]

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

van Driel, H. M.

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

VanLue, D.

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

Verdún, H. R.

Walker, D. R.

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

Welford, D.

Whitney, W.

Appl. Phys. B (1)

U. J. Greiner, H. H. Klingenberg, D. R. Walker, C. J. Flood, H. M. van Driel, Appl. Phys. B 58, 393 (1994).
[Crossref]

Appl. Phys. Lett. (1)

W. C. Scott, M. de Wit, Appl. Phys. Lett. 18, 3 (1971).
[Crossref]

IEEE J. Quantum Electron. (3)

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

B. J. Comasky, R. Beach, G. Albrecht, W. J. Benett, B. L. Freitas, C. Petty, D. VanLue, D. Mundinger, R. W. Solarz, IEEE J. Quantum Electron. 28, 992 (1992).
[Crossref]

S. C. Tidwell, J. F. Seamans, M. S. Bowers, A. K. Cousins, IEEE J. Quantum Electron. 28, 997 (1992).
[Crossref]

Opt. Lett. (7)

Other (1)

W. Koechner, Solid-State Laser Engineering, 3rd ed., Vol. 1 of Springer Series in Optical Sciences (Springer-Verlag, Berlin, 1992).

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Figures (5)

Fig. 1
Fig. 1

Cross section of the pump configuration, showing the geometry of the laser-diode arrays (LDA) and the elliptical mirrors (EM) with respect to the Nd:YAG rod (YAG). The flow tube (FT) and the temperature-regulating heat sinks for the laser diodes (HS) are also shown.

Fig. 2
Fig. 2

Three-dimensional intensity surface map of the pump distribution in the Nd:YAG rod. The pump distribution clearly produces anisotropic gain.

Fig. 3
Fig. 3

Intensity contour plot of the TEM00 output mode at a distance of 30 cm from the output coupler and with 13.1 W of power.

Fig. 4
Fig. 4

(a) Temperature contour plot calculated from the measured pump distribution (~0.7 K/contour). Thermal conductivity greatly reduces the high-order spatial structure in the pump (energy deposition) profile. (b) Density plot of the thermally induced interference pattern at 633 nm, showing a phase change of ~4π between the edge and the center of the rod.

Fig. 5
Fig. 5

Horizontal phase-retardation profile through the center of the rod, showing the calculated and the measured values. The fit to the interferometrically measured data (solid curve) is parabolic and defines a perfect 35-cm focal-length lens.

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