Open AccessWidely Tunable Watt-Level Single-Frequency Tm-Doped Fiber Ring Laser as Pump for Mid-IR Frequency Generation
Author(s) -
Sun Do Lim,
Jae-Keun Yoo,
Seung Kwan Kim
Publication year - 2016
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2016.2574358
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We demonstrate a thulium-doped fiber ring laser (TDFRL) integrated with an amplifier, which has a watt-level single-frequency output at 2 $\mu\text{m}$ with a 120-nm wavelength tunability. The TDFRL is constructed based on a hybrid ring-linear resonator configuration. An unpumped TDF is incorporated as a self-constructed saturable absorption grating. A blazed grating aligned in a Littrow configuration is employed for broadband wavelength-selective feedback. The characteristics of the laser output mode are analyzed by using an all-fiber scanning ring resonator.