Abstract

We propose a technique for pumping Nd:YVO4 with high optical power at 888nm while making absorption independent of the pump light polarization state. This is especially suitable for systems end pumped by high-power, high-brightness fiber-coupled diode sources associated with long vanadate crystals to effectively spread the heat load in a large volume. A compact 60W output, 55% optical efficiency cw TEM00 oscillator was demonstrated.

© 2006 Optical Society of America

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References

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  1. Y.-F. Chen, Y. P. Lan, and S. C. Wang, Opt. Lett. 25, 1016 (2000).
    [CrossRef]
  2. W. Koechner, Solid-State Laser Engineering (Springer, 1999), p. 64.
  3. A. Petersen, "Diode pumped, fiber coupled laser with depolarized pump beam," U.S. Patent 5,999,544 (December 7, 1999).
  4. D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.
  5. R. Lavi, S. Jackel, Y. Tzuk, M. Winik, E. Lebiush, M. Katz, and I. Paiss, Appl. Opt. 38, 7382 (1999).
    [CrossRef]
  6. A. A. Kaminskii, Laser Crystals (Springer, 1990), p. 130.
  7. E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).
  8. I. O. Musgrave, W. A. Clarkson, and D. C. Hanna, in Conference on Lasers and Electro-Optics (Optical Society of America, 2001), pp. 171-172.

2000 (1)

1999 (1)

Bell, D.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Chen, Y.-F.

Cheng, E.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Clarkson, W. A.

I. O. Musgrave, W. A. Clarkson, and D. C. Hanna, in Conference on Lasers and Electro-Optics (Optical Society of America, 2001), pp. 171-172.

Dudley, D.

D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Hanna, D. C.

I. O. Musgrave, W. A. Clarkson, and D. C. Hanna, in Conference on Lasers and Electro-Optics (Optical Society of America, 2001), pp. 171-172.

Hodgson, N.

D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.

Hoffman, H.

D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.

Jackel, S.

Kafka, J.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Kaminskii, A. A.

A. A. Kaminskii, Laser Crystals (Springer, 1990), p. 130.

Katz, M.

Koechner, W.

W. Koechner, Solid-State Laser Engineering (Springer, 1999), p. 64.

Kopper, F.

D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.

Lan, Y. P.

Lavi, R.

Lebiush, E.

Musgrave, I. O.

I. O. Musgrave, W. A. Clarkson, and D. C. Hanna, in Conference on Lasers and Electro-Optics (Optical Society of America, 2001), pp. 171-172.

Nighan, W.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Paiss, I.

Petersen, A.

A. Petersen, "Diode pumped, fiber coupled laser with depolarized pump beam," U.S. Patent 5,999,544 (December 7, 1999).

Spence, D.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

Tzuk, Y.

Wang, S. C.

Winik, M.

Appl. Opt. (1)

Opt. Lett. (1)

Other (6)

W. Koechner, Solid-State Laser Engineering (Springer, 1999), p. 64.

A. Petersen, "Diode pumped, fiber coupled laser with depolarized pump beam," U.S. Patent 5,999,544 (December 7, 1999).

D. Dudley, N. Hodgson, H. Hoffman, and F. Kopper, in Conference on Lasers and Electro-Optics (Optical Society of America, 2002), pp. 176-177.

A. A. Kaminskii, Laser Crystals (Springer, 1990), p. 130.

E. Cheng, D. Dudley, W. Nighan, J. Kafka, D. Spence, and D. Bell, "Lasers with low-doped gain medium," U.S. patent 6,185,235 (February 6, 2001).

I. O. Musgrave, W. A. Clarkson, and D. C. Hanna, in Conference on Lasers and Electro-Optics (Optical Society of America, 2001), pp. 171-172.

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Figures (5)

Fig. 1
Fig. 1

Normalized absorbed power per length for 808 nm pumping (dashed curve) and polarized pumping (solid curve) with 95% total absorption in both cases.

Fig. 2
Fig. 2

Nd : YVO 4 absorption spectrum for 1 at . % doping concentration.

Fig. 3
Fig. 3

Effective absorption for a 3.5 nm bandwidth diode. Dots represent measured data, and solid curves represent simulations obtained by convoluting a diode spectrum by vanadate’s absorption spectrum.

Fig. 4
Fig. 4

Output power (black dots) and optical efficiency (gray squares) versus absorbed pump power for a short plane–plane multimode resonator.

Fig. 5
Fig. 5

TEM 00 symmetric cavity setup. Convex r = + 1000 mm M 1 and M 2 pump mirrors are HT at 888 nm and HR at 1064 nm . Pump backreflection is achieved by collimating lens L and HR mirror M 3 . Output coupler OC and end mirror HR are both flat.

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