Watt-level efficient 2.3 µm thulium fluoride fiber laser
- Resource Type
- Authors
- Florent Starecki; Franck Joulain; Thomas Godin; Pavel Loiko; Patrice Camy; Alain Braud; Solenn Cozic; Aleksey Tyazhev; Ammar Hideur; Mincheng Tang; Lauren Guillemot
- Source
- Optics Letters
Optics Letters, Optical Society of America-OSA Publishing, 2020, 45 (20), pp.5788. ⟨10.1364/OL.403450⟩
- Subject
- Materials science
chemistry.chemical_element
02 engineering and technology
7. Clean energy
01 natural sciences
law.invention
010309 optics
chemistry.chemical_compound
Optics
law
Fiber laser
0103 physical sciences
ComputingMilieux_MISCELLANEOUS
Zirconium
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
business.industry
Slope efficiency
021001 nanoscience & nanotechnology
Laser
Atomic and Molecular Physics, and Optics
Photon upconversion
Thulium
chemistry
Femtosecond
0210 nano-technology
business
Fluoride
- Language
- English
- ISSN
- 0146-9592
1539-4794
We report on an efficient mid-infrared thulium (Tm) fiber laser operating on the 3 H 4 → 3 H 5 transition and featuring an upconversion pumping scheme. This laser comprises a heavily T m 3 + -doped (2.50 mol. %) zirconium fluoride glass fiber pumped by a tunable Yb fiber laser around 1.05 µm corresponding to the 3 F 4 → 3 F 2 , 3 excited-state absorption transition. The laser generates 1.24 W at 2269–2282 nm with a slope efficiency of 37% in the quasi-continuous-wave regime. The Tm-glass fiber exhibits a broadband 3 H 4 → 3 H 5 emission with a bandwidth of 173 nm, making it very promising for femtosecond fiber oscillators at ∼ 2.3 µ m .