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Coherent beam combination of broad-area laser diode array using of f-axis external cavity with double feedback

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Abstract

In this letter, we demonstrate coherent beam combination of laser diode array using the external Talbot cavity with double feedback. The double feedback elements consist of grating and high-reflection plane mirror. Compared with single high-reflection plane mirror feedback, the external Talbot cavity with double feedback reduce the number of interference strips in the far-field pattern and narrow spectral line-width of the laser diode array. The results indicate that the application of the external Talbot cavity with double feedback produces a clear far-field interference pattern. In addition, line-width is reduced to 0.15 nm full-width at half-maximum (FWHM).

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DOI:10.3788/col201210.101402

所属栏目:Lasers and laser optics

责任编辑:张雁

收稿日期:2012-03-29

录用日期:2012-04-25

网络出版日期:2012-08-03

联系人作者:联系作者(zpsu@yahoo.cn)

备注:This work was supported by the National Natural Science Foundation of China (No. 60908041) and the Fundamental Research Funds for the Central Universities (No. JUSRP31005).

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引用该论文

Zhouping Su, Zhicheng Ji, Lizhi Que, Zhuowei Zhu, "Coherent beam combination of broad-area laser diode array using of f-axis external cavity with double feedback," Chinese Optics Letters 10(10), 101402 (2012)

被引情况

【1】. High efficiency beam combination of 4.6-\mu m quantum cascade lasers. Chinese Optics Letters, 2013, 11(9): 91401-91403

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