A single longitudinal mode thulium doped fiber master‐oscillator‐power‐amplifier (MOPA) laser operating at wavelength of 2081 nm has been developed. The MOPA system employs a free‐space structure with a single longitudinal mode… Click to show full abstract
A single longitudinal mode thulium doped fiber master‐oscillator‐power‐amplifier (MOPA) laser operating at wavelength of 2081 nm has been developed. The MOPA system employs a free‐space structure with a single longitudinal mode operating Ho:YAG laser serving as the master oscillator, and a Tm‐doped fiber is used for power amplifier. A single longitudinal mode laser with an output power of 7.81 W was extracted from the amplifier by injecting 173 mW of seed laser into the Tm‐doped fiber. The beam quality factor was measured as M2 ~ 1.87. To our knowledge, this is the first study on the amplification of a 2 μm solid state single longitudinal mode laser in Tm‐doped fibers.
Journal Title: Microwave and Optical Technology Letters
Year Published: 2025
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!