Phase-locking observed among high-order lateral modes of a broad-stripe diode array inside an external cavity |
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Authors: | Pengcheng Shi Jianguo Chen Lingxuan Qian Diyong Yan Jun Lei |
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Institution: | aDepartment of Optoelectronics, Sichuan University, Chengdu 610064, China |
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Abstract: | For a laser diode array (LDA) positioned in an external cavity of a certain length, a very strong inter-emitter coupling can be established between the off-axis lateral modes of the broad-stripe emitters. Under these circumstances, the phase-locked operation of the LDA due to couplings between off-axis modes of emitters has been observed, for the first time to our knowledge. The observations suggest that phase locking of a broad-stripe LDA can be achieved among different emitter lateral modes by selecting different cavity lengths. |
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Keywords: | Laser diode array Phase-locking High-order lateral mode |
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