Efficient single-axial-mode operation of a Ho:YAG ring laser pumped by a Tm-doped silica fiber laser
Efficient single-frequency operation of a Ho:YAG ring laser at room temperature with a traveling-wave TeO<sub>2</sub> acousto-optic modulator to enforce unidirectional operation is reported. By use of a 2-at.% Ho<sup>3+</sup>-doped 10-mm-long Ho:YAG rod, end pumped by a cladd...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
2004.
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Subjects: | |
Online Access: | Get fulltext |
Summary: | Efficient single-frequency operation of a Ho:YAG ring laser at room temperature with a traveling-wave TeO<sub>2</sub> acousto-optic modulator to enforce unidirectional operation is reported. By use of a 2-at.% Ho<sup>3+</sup>-doped 10-mm-long Ho:YAG rod, end pumped by a cladding-pumped tunable Tm-doped silica fiber operating at 1.9 µm, the Ho:YAG ring laser yielded 3.7 W of single-frequency output at 2.1 µm in a diffraction-limited TEM_00 beam with M2 < 1.1 for an incident pump power of 8.8 W. The rf power required for unidirectional operation was 0.3 W and corresponded to an increase in cavity loss for the lasing direction (due to diffraction) of only 0.5%. The prospects for further improvement in efficiency are discussed. |
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