Yingrun Fan, Jinlong Xiao, Zhengzheng Shen, Youzeng Hao, Jiachen Liu, Ke Yang, Yuede Yang, Yongzhen Huang. 1.65 µm square-FP coupled cavity semiconductor laser for methane gas detection[J]. Chinese Optics Letters, 2022, 20(6): 061401
- Chinese Optics Letters
- Vol. 20, Issue 6, 061401 (2022)
Fig. 1. Square-FP coupled cavity 2D structure schematic.
Fig. 2. TE mode distributions of the coupled cavity at different wavelengths. (a) 1642.8 nm; (b) 1641.47 nm; (c) 1641.0 nm.
Fig. 3. Microscope image of the square-FP coupled cavity laser (a) after cleaving and (b) after wedge bonding.
Fig. 4. Output optical power with the variation of IFP at ISQ = 20 mA. Inset: the output optical power with the variation of ISQ at IFP = 83 mA.
Fig. 5. Optical spectrum of the laser at injection current of ISQ = 20 mA and IFP = 84 mA.
Fig. 6. (a) Optical spectra and SMSR with the variation of IFP at ISQ = 20 mA; (b) spectra with the variation of ISQ at IFP = 83 mA.
Fig. 7. Optical spectra and SMSR of the laser with the variation of temperature from 4.3°C to 37.7°C.
Fig. 8. Linewidth of the laser at injection current of ISQ = 20 mA and IFP = 84 mA.
Fig. 9. (Pair-PCH4)/Pair with the variation of the lasing wavelength.
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