Distortion of optical feedback signals in microchip Nd:YAG lasers subjected to external multi-beam interference feedback |
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| Authors: | Tan Yi-Dong Zhang Shu-Lian Ren Zhou Ren Cheng Zhang Yi-Nan |
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| Affiliation: | The State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China |
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| Abstract: | This paper proposes a theoretical analysis for thecharacteristics of an external cavity Nd:YAG laser with feedback ofmultiple-beam interference, which is induced by the multi-reentranceof the light from the external Fabry--Perot cavity. The theoreticalmodel considers the multiple beam interference of the externalFabry--Perot cavity. It is found that the optical feedback signalsare distorted to pulse waveforms instead of the sinusoidal ones inconventional feedback. The experimental results are in goodagreement with the theoretical analysis. The obtained theoreticaland experimental results can advance the development of a laserfeedback interferometer. |
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| Keywords: | optical feedback multi-beam interference |
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