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).

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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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2010

2009

2008

F. W. Wise, A. Chong, and W. H. Renninger, “High-energy femtosecond fiber lasers based on pulse propagation at normal dispersion,” Laser Photon. Rev. 2(1-2), 58–73 (2008).
[CrossRef]

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

J. W. Nicholson, A. D. Yablon, S. Ramachandran, and S. Ghalmi, “Spatially and spectrally resolved imaging of modal content in large-mode-area fibers,” Opt. Express 16(10), 7233–7243 (2008).
[CrossRef] [PubMed]

V. Pervak, C. Teisset, A. Sugita, S. Naumov, F. Krausz, and A. Apolonski, “High-dispersive mirrors for femtosecond lasers,” Opt. Express 16(14), 10220–10233 (2008).
[CrossRef] [PubMed]

1994

Ahmad, I.

Apolonski, A.

Baer, C. R. E.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Baumgartl, M.

Birge, J. R.

Chong, A.

K. Kieu, W. H. Renninger, A. Chong, and F. W. Wise, “Sub-100 fs pulses at watt-level powers from a dissipative-soliton fiber laser,” Opt. Lett. 34(5), 593–595 (2009).
[CrossRef] [PubMed]

F. W. Wise, A. Chong, and W. H. Renninger, “High-energy femtosecond fiber lasers based on pulse propagation at normal dispersion,” Laser Photon. Rev. 2(1-2), 58–73 (2008).
[CrossRef]

Deng, Y. J.

Ferencz, K.

Ghalmi, S.

Gingras, G.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Hashimoto, S.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Hideur, A.

Kafka, J. D.

Karsch, S.

Kärtner, F. X.

Keller, U.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Kieu, K.

Krausz, F.

Lecaplain, C.

Lefrançois, S.

Limpert, J.

Major, Zs.

Marchese, S. V.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Naumov, S.

Nicholson, J. W.

Ortaç, B.

Pervak, V.

Ramachandran, S.

Renninger, W. H.

K. Kieu, W. H. Renninger, A. Chong, and F. W. Wise, “Sub-100 fs pulses at watt-level powers from a dissipative-soliton fiber laser,” Opt. Lett. 34(5), 593–595 (2009).
[CrossRef] [PubMed]

F. W. Wise, A. Chong, and W. H. Renninger, “High-energy femtosecond fiber lasers based on pulse propagation at normal dispersion,” Laser Photon. Rev. 2(1-2), 58–73 (2008).
[CrossRef]

Spielmann, C.

Südmeyer, T.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Sugita, A.

Szipocs, R.

Teisset, C.

Trushin, S. A.

Tünnermann, A.

Wise, F. W.

Witzel, B.

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Yablon, A. D.

Laser Photon. Rev.

F. W. Wise, A. Chong, and W. H. Renninger, “High-energy femtosecond fiber lasers based on pulse propagation at normal dispersion,” Laser Photon. Rev. 2(1-2), 58–73 (2008).
[CrossRef]

Nat. Photonics

T. Südmeyer, S. V. Marchese, S. Hashimoto, C. R. E. Baer, G. Gingras, B. Witzel, and U. Keller, “Femtosecond laser oscillators for high-field science,” Nat. Photonics 2(10), 599–604 (2008).
[CrossRef]

Opt. Express

Opt. Lett.

Other

S. Lefrancois, F. W. Wise, T. S. Sosnowski, A. Galvanauskas, and C. –H. Liu, “High power dissipative soliton laser using chirally-coupled core fiber,” Paper 7914–60, SPIE photonics west (2011).

C.-H. Liu, G. Q. Chang, N. Litchinister, D. Guertin, N. Jacobson, K. Tankala, and A. Galvanauskas, “Chirally coupled core fibers at 1550-nm and 1064-nm for effectively single-mode core size scaling,” paper CTuBB3, CLEO/QELS, Baltimore (2007).

A. Galvanauskas, M. C. Swan, and C.-H. Liu, “Effectively single-mode large core passive and active fibers with chirally coupled-core structures,” paper CMB1, CLEO/QELS, San Jose (2008).

C.-H. Liu, S. H. Huang, C. Zhu, and A. Galvanauskas, “High energy and high power pulsed chirally-coupled-core fiber laser system,” Paper MD2, ASSP, Denver (2009).

S. H. Huang, C. Zhu, C.-H. Liu, X. Ma, M. C. Swan, and A. Galvanauskas, “Power scaling of CCC fiber based lasers,” paper CTHGG1, CLEO/IQEC, Baltimore (2009).

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Figures (4)

Fig. 1
Fig. 1

Schematic setup of the laser system. DM: dichroic mirror; QWP: quarter-wave plate; HWP: half-wave plate; LPF: long-wavelength pass filter; DG: diffraction grating; PBS: polarization beam splitter; SAM: saturable absorber mirror; HDM: high-dispersion mirror. The fiber’s cross-section shows the central core and the side core.

Fig. 2
Fig. 2

Duration of AC trace versus number of HDM bounces. Inset: (a) designed (blue, solid line) and measured (red, dashed line) group delay as a function of wavelength and (b) the optical spectrum of the pulse.

Fig. 3
Fig. 3

Compression of a broadband pulse. Two curves represent the measured AC trace (red, solid line) and calculated AC trace (blue, dashed line) corresponding to the transform-limited pulse, and. Inset: (a) optical spectrum and (b) RF spectrum measured at resolution bandwidth of 300 kHz.

Fig. 4
Fig. 4

Beam profile and M2 measurement of the compressed pulses. M2 = 1.05 indicates that the HDM based compressor preserves the diffraction-limited beam quality of the 3C Yb-fiber oscillator.

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