Laser & Optoelectronics Progress, Volume. 62, Issue 15, 1514006(2025)
976 nm External Cavity Diode Laser with High Beam Quality and Narrow Linewidth
Fig. 2. Schematic of mode selection principle for external cavity diode laser. (a) Gain curve and loss curve; (b) internal cavity modes; (c) external cavity modes; (d) gain saturation competition and mode competition; (e) single-peak mode output
Fig. 5. High beam quality and narrow linewidth external cavity diode laser. (a) Schematic diagram; (b) physical device
Fig. 6. Experimental results. (a) Free-running operation output power curve; (b) free spectrum; (c) initial beam quality (inset: morphology of the light spot recorded by CCD)
Fig. 7. 976 nm 3 dB linewidth after mode selection and locking with an external cavity structure
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Qinghao Zhao, Di Xin, Kai Gong, Hai Wang, Xuyan Zhou, Hongbo Zhang. 976 nm External Cavity Diode Laser with High Beam Quality and Narrow Linewidth[J]. Laser & Optoelectronics Progress, 2025, 62(15): 1514006
Category: Lasers and Laser Optics
Received: Dec. 17, 2024
Accepted: Jan. 20, 2025
Published Online: Aug. 4, 2025
The Author Email: Hongbo Zhang (hbzhang@ucas.ac.cn)
CSTR:32186.14.LOP242432