Zhenghao Zhang, Fang Wei, Huimin Wu, Qingshuai Su, Chen Chen, Qing Ye, Haiwen Cai. Coherent Beam Combining Laser Source Based on an Injection‑Locked DFB Laser Array Using Planar Lightwave Circuit Technology[J]. Chinese Journal of Lasers, 2023, 50(19): 1901009
- Chinese Journal of Lasers
- Vol. 50, Issue 19, 1901009 (2023)
Fig. 1. Butterfly packaged four-channel combined transmitter optical subassembly. (a) Schematic; (b) physical diagram (30 mm×15 mm×9 mm)
Fig. 2. Experimental setup for testing the coherent beam combining effect of injection-locked DFB laser array coherently combined via planar lightwave
Fig. 3. Effect of laser operating current on the power after coherent addition of two injected locked laser beams
Fig. 4. Schematic figure of coherent addition of the output light from two injection-locked DFB lasers
Fig. 5. Phase noise of the master laser and injection-locked slave lasers containing different numbers of DFB lasers
Fig. 6. Relative intensity noise of the master laser and injection-locked slave lasers containing different numbers of DFB lasers
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Table 1. Operating current and output optical power of the four DFB lasers
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Table 2. Effect of the number of lasers and injected power on intrinsic linewidth
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