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We report on a GaSb-based laterally coupled distributed feedback (LC-DFB) laser with Cr gratings operating at 2004 nm for CO2 detection application. Being butterfly packaged with single-mode fiber pigtailed, the… Click to show full abstract
We report on a GaSb-based laterally coupled distributed feedback (LC-DFB) laser with Cr gratings operating at 2004 nm for CO2 detection application. Being butterfly packaged with single-mode fiber pigtailed, the laser diode operates in the continuous-wave mode from -10 ℃ to 60 ℃, with the maximum output power of 2 mW and the maximum side-mode suppression ratio over 30 dB. Wavelength-modulated absorption spectroscopy of CO2 demonstrates the applicability of the LC-DFB laser for tunable diode laser absorption spectroscopy. Furthermore, the diode junction temperature, which has been measured using the wavelength shift method, exhibits a maximum value of 17 ℃ within the single-mode operation range.
Journal Title: Chinese Physics B
Year Published: 2023
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