Abstract

In this work we report the spectroscopy and laser results of several Thulium doped BaY2F8 single crystals grown using the Czochralski technique. The doping concentration is between 2at.% and 18at.%. We performed room temperature laser experiments pumping the samples with a laser diode at 789 nm obtaining 61% as maximum optical-to-optical efficiency with a maximum output power of 290 mW and a minimum lasing threshold of 26 mW. The lasing wavelength changed with the dopant concentration from 1927 nm up to 2030 nm and the nature of the transition changed from purely electronic to vibronic, accordingly.

© 2004 Optical Society of America

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References

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Appl. Phys. B (1)

L.E. Batay, A.A. Demidovich, A.N. Kuzmin, A.N. Titov, M. Mond, and S. Kück, �?? Efficient tunable laser operation of diode-pumped Yb,Tm:KY(WO4)2 around 1.9 µm,�?? Appl. Phys. B 75, 457-461 (2002).
[CrossRef]

IEEE J. Quantum Electron. (3)

S.A. Payne, L.L. Chase, L.K. Smith, W.L. Kway, and W.F. Krupke, �??Infrared cross-section measurements for crystals doped with Er3+, Tm3+ and Ho3+,�?? IEEE J. Quantum Electron. 28, 2619-2630 (1992).
[CrossRef]

L.F. Johnson, and H.J. Guggenheim, �??Electronic- and phonon-terminated laser emission from Ho3+ in BaY2F8,�?? IEEE J. Quantum Electron. 10, 442-449 (1974).
[CrossRef]

B.F. Aull, and H.P. Jenssen, �??Vibronic interactionsin Nd:YAG resulting in nonreciprocity of absorption and stimulated emission cross section,�?? IEEE J. Quantum Electron. 18, 925-930 (1982).
[CrossRef]

J. Opt. Soc. Am. B (2)

Opt. Commun. (1)

I.F. Elder, and M.J.P. Payne, �??Lasing in dode-pumped Tm:YAP, Tm,Ho:YAP and Tm,Ho:YLF,�?? Opt. Commun. 145, 329-339 (1998).
[CrossRef]

Opt. Lett. (1)

OSA Proceeding Series (1)

A. Dergachev, K. Wall, and P.F. Moulton, �??A CW side-pumped Tm:YLF laser,�?? in Advanced Solid State Lasers, M.E. Fermann and L.R. Marshall, eds., Vol. 68 of OSA Proceeding Series (Optical Society of America, Washington , D.C., 2002) pp. 343-346

Other (2)

K. M. Dinndorf, �??Energy transfer between Thulium and Holmium in laser hosts�??, Ph.D. Dissertation MIT (1993).

A.E. Siegman, Lasers, (University Science, Mill Valley, Calif., 1982).

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Figures (4)

Fig. 1.
Fig. 1.

Room temperature absorption spectrum of the 12% doped sample of the 3F4 and the 3H4 manifolds for the a and b polarizations.

Fig. 2.
Fig. 2.

Emission cross section for the 3F43H6 transition for the a and b polarizations and for the emission perpendicular to a and b.

Fig. 3.
Fig. 3.

Output power as a function of incident power for the 8%, 12% and 18% doped samples.

Fig. 4.
Fig. 4.

Laser emission spectra for 5%, 8%, 12% and 18% laser samples.

Tables (1)

Tables Icon

Table 1. Summary of the laser results: ηinc stands for the slope efficiency with respect to the incident power, while ηabs indicates the slope efficiency calculated taking into account the absorbed power.

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