OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 16, Iss. 8 — Aug. 1, 1999
  • pp: 1220–1223

Generation of a broad amplified spectrum in a femtosecond terawatt Ti:sapphire laser by a long-wavelength injection method

Yong Ho Cha, Young Il Kang, and Chang Hee Nam  »View Author Affiliations

JOSA B, Vol. 16, Issue 8, pp. 1220-1223 (1999)

View Full Text Article

Enhanced HTML    Acrobat PDF (135 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A long-wavelength injection method is proposed that will yield a broad amplified spectrum in a femtosecond terawatt Ti:sapphire laser. By injecting a seed pulse on the red side of the gain peak and amplifying it to a saturated fluence level, we could significantly compensate for the spectral narrowing that is due to the gain-narrowing effect by use of the amplifying characteristics of a positively chirped pulse in a gain-saturated regime, and 20-fs, 3-TW pulses could be demonstrated from a Ti:sapphire laser with two multipass amplifiers.

© 1999 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3590) Lasers and laser optics : Lasers, titanium
(140.7090) Lasers and laser optics : Ultrafast lasers
(320.1590) Ultrafast optics : Chirping

Yong Ho Cha, Young Il Kang, and Chang Hee Nam, "Generation of a broad amplified spectrum in a femtosecond terawatt Ti:sapphire laser by a long-wavelength injection method," J. Opt. Soc. Am. B 16, 1220-1223 (1999)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. C. P. J. Barty, C. L. Gordon, III, and B. E. Lemoff, “Multiterawatt 30-fs Ti:sapphire laser system,” Opt. Lett. 19, 1442–1444 (1994). [CrossRef] [PubMed]
  2. J. Zhou, C.-P. Huang, M. M. Murnane, and H. C. Kapteyn, “Amplification of 26-fs, 2-TW pulses near the gain-narrowing limit in Ti:sapphire,” Opt. Lett. 20, 64–66 (1995). [CrossRef] [PubMed]
  3. J. P. Chambaret, C. Le Blanc, G. Chériaux, P. Curley, G. Darpentigny, P. Rousseau, G. Hamoniaux, A. Antonetti, and F. Salin, “Generation of 25-TW, 32-fs pulses at 10 Hz,” Opt. Lett. 21, 1921–1923 (1996). [CrossRef] [PubMed]
  4. C. P. J. Barty, T. Guo, C. Le Blanc, F. Raksi, C. Rose-Petruck, J. Squier, K. R. Wilson, V. V. Yakovlev, and K. Yamakawa, “Generation of 18-fs, multiterawatt pulses by regenerative pulse shaping and chirped-pulse amplification,” Opt. Lett. 21, 668–670 (1996). [CrossRef] [PubMed]
  5. K. Yamakawa, M. Aoyama, S. Matsuoka, H. Takuma, C. P. J. Barty, and D. Fittinghoff, “Generation of 16-fs, 10-TW pulses at a 10-Hz repetition rate with efficient Ti:sapphire amplifiers,” Opt. Lett. 23, 525–527 (1998). [CrossRef]
  6. S. Backus, C. G. Durfee, III, G. Mourou, H. C. Kapteyn, and M. M. Murnane, “0.2-TW laser system at 1 kHz,” Opt. Lett. 22, 1256–1258 (1997). [CrossRef] [PubMed]
  7. L. M. Frantz and J. S. Nodvik, “Theory of pulse propagation in a laser amplifier,” J. Appl. Phys. 34, 2346–2349 (1963). [CrossRef]
  8. J. C. Diels and W. Rudolph, Ultrashort Laser Pulse Phenomena (Academic, San Diego, Calif., 1996), p. 116.
  9. C. L. Blanc, P. Curely, and F. Salin, “Gain-narrowing and gain-shifting of ultra-short pulses in Ti:sapphire amplifiers,” Opt. Commun. 131, 391–398 (1996). [CrossRef]
  10. P. F. Moulton, “Spectroscopic and laser characteristics of Ti:Al2O3,” J. Opt. Soc. Am. B 3, 125–133 (1986). [CrossRef]
  11. G. Chériaux, P. Rousseau, F. Salin, J. P. Chambaret, B. Walker, and L. F. Dimauro, “Aberration-free stretcher design for ultrashort-pulse amplification,” Opt. Lett. 21, 414–416 (1996). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited