The comparative analysis and optimization of the free-running Tm3+:YAP and Tm3+:YAG microlasers

The thulium microlasers based on yttrium-aluminium perovskite and yttrium-aluminium garnet crystals are considered as coherent light sources at the wavelength near 2 Delta *mm. The comparative analysis of these lasers is carried out by means of the lasers' parameters optimization for each value...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2007-08, Vol.88 (3), p.433-442
Main Authors: Buryy, O.A., Sugak, D.Y., Ubizskii, S.B., Izhnin, I.I., Vakiv, M.M., Solskii, I.M.
Format: Article
Language:English
Subjects:
Coherent light
Crystals
Lasers
Microlasers
Optical pumping
Optimization
Reflectivity
Upconversion
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Summary:The thulium microlasers based on yttrium-aluminium perovskite and yttrium-aluminium garnet crystals are considered as coherent light sources at the wavelength near 2 Delta *mm. The comparative analysis of these lasers is carried out by means of the lasers' parameters optimization for each value of the pumping power taking into consideration the cross-relaxation and up-conversion processes as well as heating of the active medium. The optimal values of the active medium length, activator concentration and the output mirror reflectivity are determined both for Tm:YAP- and Tm:YAG-laser. The pulse generation of Tm:YAP- and Tm:YAG-lasers is also considered, the parameters of this regime are determined. The comparison shows the suitability of Tm:YAP laser crystal both for cw and pulse generation. The up-conversion influence on the laser characteristics is also analyzed.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-007-2718-3