Abstract

We report for the first time to our knowledge an experimental demonstration of wavelength self-tuning in a K5NdMoO44 broadband-emitting laser crystal (KNM), as well as a theoretical treatment of the system based on its birefringence properties. The self-frequency-tuning of the laser along the full spectral range of the KNM crystal was obtained by rotating a birefringent gain plate in its own plane. The gain plate was placed inside a resonator at Brewster’s angle. The tuning characteristics of the spectral filter were obtained by use of the Jones vector formalism. The calculated wavelength-selective tuning precisely matches the experimental observations.

© 2003 Optical Society of America

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References

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2002

1997

S. Huard, Polarization of Light (Wiley, New York, 1997), pp. 205–215.

1994

1992

1990

1984

A. Yariv and P. Yeh, Optical Waves in Crystals: Propagation and Control of Laser Radiation (Wiley, New York, 1984), pp. 151–152.

1974

1942

1941

Al-Saleh, M.

Balda, R.

Bloom, A. L.

Fernández, J.

Huard, S.

S. Huard, Polarization of Light (Wiley, New York, 1997), pp. 205–215.

Iparraguirre, I.

Jones, R. C.

Mavrudis, T.

Mentel, J.

Schmidt, E.

Voda, M.

Wang, X.

Yao, J.

Yariv, A.

A. Yariv and P. Yeh, Optical Waves in Crystals: Propagation and Control of Laser Radiation (Wiley, New York, 1984), pp. 151–152.

Yeh, P.

A. Yariv and P. Yeh, Optical Waves in Crystals: Propagation and Control of Laser Radiation (Wiley, New York, 1984), pp. 151–152.

Zhu, S.

Zhu, X.

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Figures (3)

Fig. 1
Fig. 1

Self-frequency tuning in a KNM crystal around φ=45°. The vertical ticks show the calculated λmax of the birefringent filter.

Fig. 2
Fig. 2

Calculated transmittance, Tp,s=tp,s*tp,s, for the two orthogonal polarizations passing the birefringence filter after 1/2, 5, 25, and 150 round trips.

Fig. 3
Fig. 3

Self-tuning range for the KNM laser as a function of φ. The solid lines are the theoretical predictions, taking into account the wavelength dependence of the refractive indices.

Equations (1)

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tp,s= 2-2N[1+q2 expiΓ-q2-1expiΓ-1×cos2 α±(1+q2 expiΓ-expiΓ-1×q2-1cos2 α2-4q2 expiΓ)1/2]2N,

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