Passive coherent beam combining of quantum-cascade lasers with a Dammann grating.
نویسندگان
چکیده
An external cavity using a binary phase grating has been developed to achieve coherent combining of five quantum-cascade lasers emitting at 4.65 μm. The grating phase profile is designed to combine five beams of equal intensities into a single beam with a good efficiency (~75%). The performances of this cavity concerning output power, stability, combining efficiency and beam quality are detailed. We report a CW combining efficiency of 66% corresponding to an output power of ~0.5 W with a good beam quality (M(2)<1.6).
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ورودعنوان ژورنال:
- Optics letters
دوره 36 19 شماره
صفحات -
تاریخ انتشار 2011