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400 mW narrow linewidth single-frequency fiber ring cavity laser in 2 um waveband
- Source :
- Optics express. 27(11)
- Publication Year :
- 2019
-
Abstract
- We present a single-frequency thulium-doped fiber laser (TDFL) with a narrow linewidth of 20 kHz. Stable single-longitudinal-mode (SLM) lasing operation at 1957 nm is achieved using a segment of un-pumped polarization-maintaining thulium-doped fiber (PM-TDF) as an ultra-narrow bandwidth filter. A high optical signal-to-noise ratio (OSNR) of over 60 dB is obtained and a high power of over 400 mW is achieved with a high slope-efficiency (~45.8%) thulium-doped fiber amplifier (TDFA).
- Subjects :
- Materials science
High power lasers
business.industry
Bandwidth (signal processing)
Physics::Optics
02 engineering and technology
021001 nanoscience & nanotechnology
Laser
01 natural sciences
Atomic and Molecular Physics, and Optics
law.invention
010309 optics
Laser linewidth
Optics
law
Fiber laser
0103 physical sciences
Fiber ring
Fiber amplifier
0210 nano-technology
business
Lasing threshold
Subjects
Details
- ISSN :
- 10944087
- Volume :
- 27
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Optics express
- Accession number :
- edsair.doi.dedup.....0d7609dcc65b91bdd28332c49871c10a