Stable intracavity doubling of orthogonal linearly polarized modes in diode-pumped Nd:YAG lasers
The stability of the output light from a diode-pumped intracavity frequency-doubled Nd:YAG laser was studied. An intracavity nonlinear crystal, such as Type II phase-matched potassium titanyl phosphate, was used for frequency doubling. The incident beam consisted of two orthogonal linearly polarized...
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| Published in | Optics letters Vol. 13; no. 10; p. 805 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.10.1988
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| Online Access | Get more information |
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| Summary: | The stability of the output light from a diode-pumped intracavity frequency-doubled Nd:YAG laser was studied. An intracavity nonlinear crystal, such as Type II phase-matched potassium titanyl phosphate, was used for frequency doubling. The incident beam consisted of two orthogonal linearly polarized modes. When the polarization eigenvectors were parallel to the E and O axes of the crystal, a large amplitude fluctuation was observed; however, when the azimuthal angle between the polarization eigenvectors and the axis was 45 degrees , the light output was stabilized. The experimental results are explained by analyzing the coupling of the two orthogonal linearly polarized modes through a sum-frequency-generation process. |
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| ISSN: | 0146-9592 |
| DOI: | 10.1364/ol.13.000805 |