Boris D. Barmashenko, Karol Waichman, Salman Rosenwaks
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引用次数: 0
摘要
报告了带有不稳定共焦谐振器的铯二极管泵浦碱激光器的分析模型。研究了表征输出光束质量的两个参数：远场轴向光强和斗内功率（PIB）。远场轴向光强和 PIB 与截断高斯参考光束的值进行了比较，截断高斯参考光束的孔径受限于大谐振器反射镜的孔径，99% 的高斯光束能量通过该反射镜的孔径。对于不稳定谐振器放大系数 m > 5 的较大值，远场轴向光强比高斯参考光束的光强大约大 40%。对 PIB 曲线的分析表明，当 m > 5 较大时，不稳定谐振器在足够大的衍射角内的积分包围功率值超过了参考高斯光束的值。
Analytical study of the beam quality of a diode-pumped alkali laser with unstable resonator
Analytical model of Cs diode-pumped alkali laser with unstable confocal resonator is reported. Two of the parameters characterizing the quality of the output beam were studied: the axial luminous intensity in the far field and the power in the bucket (PIB). The far-field axial light intensity and PIB were compared with their values for a truncated Gaussian reference beam whose aperture was limited by the aperture of the large resonator mirror and 99% of the Gaussian beam energy passed through the aperture of this mirror. For large values of the unstable resonator magnification factor m > 5, the far-field axial light intensity is approximately 40% larger than that of the Gaussian reference beam. Analysis of the PIB curves showed that for large m > 5, the values of the integrated fractional encircled power within a sufficiently large diffraction angles for the unstable resonator exceed its values for the reference Gaussian beam.
期刊介绍：
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
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