Beam characteristic analysis for an unsymmetric single Nd:YAG rod resonator

We theoretically investigate the characteristics of an unsymmetric resonator with single Nd:YAG rod to find the best condition for getting the highly efficient intracavity second harmonics. The beam quality is analyzed with ABCD matrixes including the thermal characteristic of Nd:YAG rod. The analys...

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Veröffentlicht in:	Optics and laser technology 2006-10, Vol.38 (7), p.528-533
Hauptverfasser:	Kim, Hyun Su, Kim, Jin-Tae, Rak Park, Jong
Format:	Artikel
Sprache:	eng
Schlagworte:	Beam characteristics: profile, intensity, and power spatial pattern formation Exact sciences and technology Frequency conversion harmonic generation, including high-order harmonic generation Fundamental areas of phenomenology (including applications) Geometrical optics Laser optical systems: design and operation Nd:YAG Nonlinear optics Optics Physics Resonator Resonators, cavities, amplifiers, arrays, and rings SHG
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Beschreibung
Zusammenfassung:	We theoretically investigate the characteristics of an unsymmetric resonator with single Nd:YAG rod to find the best condition for getting the highly efficient intracavity second harmonics. The beam quality is analyzed with ABCD matrixes including the thermal characteristic of Nd:YAG rod. The analysis is focused on stability, M 2 , beam waist and mode-volume of laser beam inside resonator. The results show that the smallest beam waist and a large TEM 00 mode-volume can be achieved when a Nd:YAG rod closely contacts one of the laser mirrors. This means that the second harmonics of intracavity type generated under these conditions can be highly efficient.
ISSN:	0030-3992 1879-2545
DOI:	10.1016/j.optlastec.2004.11.024