Patent ID: 11949208
Assignee: OCEAN UNIVERSITY OF CHINA
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 2:
3. The degassing-free underwater dissolved carbon dioxide detection device according to claim 1, wherein the thulium-doped fiber vertical-cavity laser device light source system is formed by connecting a high-reflection (HR) grating, a power tuning unit, a first pump laser device, a first wavelength division multiplexer, a thulium-doped fiber, a second wavelength division multiplexer, a second pump laser device, a low-reflection (LR) grating in sequence;
the HR grating and the LR grating form a resonator cavity of the thulium-doped fiber vertical-cavity laser device light source system; the resonator cavity outputs laser from one end of the LR grating;
the first pump laser device, the second pump laser device, the first wavelength division multiplexer, and the second wavelength division multiplexer are constructed and arranged to perform bidirectional pumping on the thulium-doped fiber.