Title :
20 W single-frequency fiber power amplifier
Author :
Hofer, S. ; Liem, A. ; Limpert, J. ; Zellmer, H. ; Tunnermann, A. ; Unger, S. ; Jetschke, S. ; Muller, H.-R. ; Freitag, I.
Author_Institution :
Inst. fur Angewandte Phys., Friedrich-Schiller-Univ., Jena, Germany
Abstract :
Summary form only given. We report on a master-oscillator fiber power-amplifier system consisting of a diode-pumped monolithic nonplanar ring laser as the master oscillator and a Yb-doped large-mode-area double-clad fiber as the power amplifier. The system emits up to 20.1 W of single-frequency radiation at a wavelength of 1064 nm with a diffraction-limited beam quality (M/sup 2/ /spl les/ 1.3). The optical emission spectrum and amplitude-noise behavior are investigated. Furthermore the power-scaling possibilities are discussed.
Keywords :
laser noise; optical fibre amplifiers; ring lasers; self-phase modulation; ytterbium; 1064 nm; 20 W; Brillouin threshold power; MOPA system; Yb-doped large-mode-area double-clad fiber; amplitude-noise behavior; diffraction-limited beam quality; diode-pumped monolithic ring laser; intensity fluctuations; optical emission spectrum; power-scaling possibilities; relative intensity noise; relaxation oscillations; self-heterodyne experiment; self-phase-modulation; single-frequency fiber power amplifier; slope efficiency; Diodes; Fiber lasers; Laser beams; Optical diffraction; Optical fiber amplifiers; Power amplifiers; Power lasers; Ring lasers; Ring oscillators; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.948222
