title: Integrated Tm:fiber MOPA with polarized output and narrow linewidth with 100 W average power.
abstract: We report on a Tm:fiber master oscillator power amplifier (MOPA) system producing 109 W CW output power, with >15 dB polarization extinction ratio, sub-nm spectral linewidth, and M2 <1.25. The system consists of polarization maintaining (PM) fiber and PM-fiber components including tapered fiber bundle pump combiners, a single-mode to large mode area mode field adapter, and a fiber-coupled isolator. The laser components ultimately determine the system architecture and the limits of laser performance, particularly considering the immature and rapidly developing state of fiber components in the 2 μm wavelength regime.
authors.affiliation: Townes Laser Institute, CREOL, The College of Optics and Photonics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816, USA. lshah@creol.ucf.edu
authors.forename: Lawrence
authors.initials: L
authors.lastname: Shah
authors.forename: R Andrew
authors.initials: RA
authors.lastname: Sims
authors.forename: Pankaj
authors.initials: P
authors.lastname: Kadwani
authors.forename: Christina C C
authors.initials: CC
authors.lastname: Willis
authors.forename: Joshua B
authors.initials: JB
authors.lastname: Bradford
authors.forename: Aaron
authors.initials: A
authors.lastname: Pung
authors.forename: Menelaos K
authors.initials: MK
authors.lastname: Poutous
authors.forename: Eric G
authors.initials: EG
authors.lastname: Johnson
authors.forename: Martin
authors.initials: M
authors.lastname: Richardson
mesh_terms: D000669:Amplifiers, Electronic; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D018511:Systems Integration; D013932:Thulium / Q000737:chemistry*
chemical_list: D013932:Thulium