Abstract

We demonstrate amplification of picosecond laser pulses to 40mJ at a 2kHz pulse repetition frequency (PRF) from a two-stage cryogenic chirped-pulse Yb:YAG amplifier, composed of a regenerative amplifier (RGA) and a two-pass booster amplifier. The RGA produces 8.2mJ of energy at 2kHz PRF and 13.2mJ at 1kHz PRF with excellent energy stability (~0.3% rms) and beam quality (M2<1.1). Pulse stretching and compression are achieved by using a chirped fiber Bragg grating and a multilayer dielectric grating pair, respectively. Compressed 15ps pulses from the RGA are obtained with a throughput efficiency of ~80% (~6.5 mJ for 2kHz). The booster amplifier further amplifies the pulses to 40mJ at 2kHz PRF, and ~32 mJ, ~15 ps pulses are expected after compression. The amplifier chain seeded from a femtosecond Yb-fiber laser enables the optical self-synchronization between signal and pump in optical parametric chirped-pulse amplifier applications.

© 2010 Optical Society of America

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2009 (4)

2008 (2)

2007 (3)

2006 (2)

Aggarwal, R. L.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Akahane, Y.

Aoyama, M.

Baltuska, A.

Bates, P.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Benedick, A.

Bolger, J. A.

Butkus, R.

A. Dubietis, R. Butkus, and A. Piskarskas, IEEE J. Sel. Top. Quantum Electron. 12, 163 (2006).
[CrossRef]

Chann, B.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Chen, M. C.

Cohen, O.

Curtis, A. H.

Dergachev, A.

Dubietis, A.

A. Dubietis, R. Butkus, and A. Piskarskas, IEEE J. Sel. Top. Quantum Electron. 12, 163 (2006).
[CrossRef]

Eggleton, B. J.

Falcão-Filho, E. L.

Fan, T. Y.

K.-H. Hong, A. Siddiqui, J. Moses, J. Gopinath, J. Hybl, F. Ö. Ilday, T. Y. Fan, and F. X. Kärtner, Opt. Lett. 33, 2473 (2008).
[CrossRef] [PubMed]

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Forget, N.

Fuji, T.

Furch, F. J.

Galvanauskas, A.

Gkortsas, V. M.

Gopinath, J.

Gordon, Ariel

Grisham, M. E.

Grishin, M.

Gu, X.

Gulbinas, V.

Hong, K.-H.

Huang, S.-W.

Hybl, J.

Ilday, F. Ö.

Ishii, N.

Kaplan, D.

Kapteyn, H. C.

Kärtner, F. X.

Kärtner, Franz X.

Kawanaka, J.

Kienberger, R.

Killi, A.

Krausz, F.

Luther, B. M.

Marangos, J. P.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Meehan, S. P.

Metzger, T.

Metzger, Th.

Michailovas, A.

Moses, J.

Mücke, O. D.

Murnane, M. M.

New, G. H. C.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Nishioka, H.

Ochoa, J. R.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Ogawa, K.

Piskarskas, A.

A. Dubietis, R. Butkus, and A. Piskarskas, IEEE J. Sel. Top. Quantum Electron. 12, 163 (2006).
[CrossRef]

Popmintchev, T.

Reagan, B. A.

Ripin, D. J.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Rocca, J. J.

Ross, I. N.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Schwarz, A.

Siddiqui, A.

Smith, R. A.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Spitzberg, J.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Springate, E.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Sutter, D.

Tang, Y.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Teisset, C. Y.

Tilleman, M.

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

Tisch, J. W. G.

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

Tokita, S.

Tsuji, K.

Yamakawa, K.

IEEE J. Sel. Top. Quantum Electron. (2)

T. Y. Fan, D. J. Ripin, R. L. Aggarwal, J. R. Ochoa, B. Chann, M. Tilleman, and J. Spitzberg, IEEE J. Sel. Top. Quantum Electron. 13, 448 (2007).
[CrossRef]

A. Dubietis, R. Butkus, and A. Piskarskas, IEEE J. Sel. Top. Quantum Electron. 12, 163 (2006).
[CrossRef]

Opt. Express (2)

Opt. Lett. (7)

Other (1)

P. Bates, Y. Tang, E. Springate, I. N. Ross, G. H. C. New, R. A. Smith, J. W. G. Tisch, and J. P. Marangos, Central Laser Facility Annual Report 2006–2007, p. 221.

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Figures (4)

Fig. 1
Fig. 1

Layout of a high-energy ps laser system at kHz PRF: (a) fiber seed source composed of a Yb-fiber laser, CFBG stretcher, and Yb-fiber preamplifier, (b) > 5 mJ kHz cryogenic Yb:YAG RGA, (c) 40 mJ multipass cryogenic Yb:YAG amplifier, and (d) high-energy high-average-power MLD grating compressor. Path (1) represents the direct compression of the RGA output, while paths (2) and (3) show two-pass and four-pass amplification, respectively: PBS, polarization beam splitter; λ / 4 , quarter-wave plate; λ / 2 , half-wave plate; FI/FR, Faraday isolator/rotator; CFBG, chirped fiber Bragg grating; TFP, thin-film polarizer; PC, Pockels cell; L1–L4, lenses; LD, fiber-coupled laser diode; DM, dichroic mirror; G, MLD grating; unspecified mirrors are high reflectors at given angles of incidence.

Fig. 2
Fig. 2

Amplification of pulses at the kHz RGA and pulse compression: (a) average powers versus pump power at 1 kHz (squares) and 2 kHz (open circles). Slope efficiency is extracted from linear fits and (b) autocorrelation trace of compressed pulses from the RGA. The extracted FWHM pulse duration is 15 ps . Both edges are clipped due to a limited scanning range.

Fig. 3
Fig. 3

Spatial beam profile of RGA output at 2 kHz , 12 W output power: (a) near-field beam profile with 2.3 mm in diam, where the diffraction rings on the main beam come from the measurement setup and (b) far-field (focused) beam profile after compressor. Measured M 2 values are 1.08 and 1.06 in the horizontal and vertical directions, respectively.

Fig. 4
Fig. 4

Average power versus pump power in the two-pass amplifier. The slope efficiency is 30%. Optical damage is observed for output powers at 85 W . The dotted and dashed curves show the output power for 12 and 6 W cw seeds for comparison.

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