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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 24 — Nov. 22, 2010
  • pp: 24699–24705

Chirally-coupled-core Yb-fiber laser delivering 80-fs pulses with diffraction-limited beam quality warranted by a high-dispersion mirror based compressor

Hung-Wen Chen, Tom Sosnowski, Chi-Hung Liu, Li-Jin Chen, Jonathan R. Birge, Almantas Galvanauskas, Franz X. Kärtner, and Guoqing Chang  »View Author Affiliations


Optics Express, Vol. 18, Issue 24, pp. 24699-24705 (2010)
http://dx.doi.org/10.1364/OE.18.024699


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Abstract

We demonstrate a high-energy femtosecond laser system that incorporates two rapidly advancing technologies: chirally-coupled-core large-mode-area Yb-fiber to ensure fundamental-mode operation and high-dispersion mirrors to enable loss-free pulse compression while preserving the diffraction-limited beam quality. Mode-locking is initiated by a saturable absorber mirror and further pulse shortening is achieved by nonlinear polarization evolution. Centered at 1045 nm with 39-MHz repetition rate, the laser emits 25-nJ, positively chirped pulses with 970-mW average power. 6 bounces from double-chirped-mirrors compress these pulses down to 80 fs, close to their transform-limited duration. The loss-free compression gives rise to a diffraction-limited optical beam (M2 = 1.05).

© 2010 OSA

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.3510) Lasers and laser optics : Lasers, fiber
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 21, 2010
Revised Manuscript: October 22, 2010
Manuscript Accepted: October 29, 2010
Published: November 10, 2010

Citation
Hung-Wen Chen, Tom Sosnowski, Chi-Hung Liu, Li-Jin Chen, Jonathan R. Birge, Almantas Galvanauskas, Franz X. Kärtner, and Guoqing Chang, "Chirally-coupled-core Yb-fiber laser delivering 80-fs pulses with diffraction-limited beam quality warranted by a high-dispersion mirror based compressor," Opt. Express 18, 24699-24705 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-24-24699


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References

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