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Optics Letters

Optics Letters


  • Vol. 24, Iss. 4 — Feb. 15, 1999
  • pp: 250–252

Modulating and scanning the mode-lock frequency of an 800-MHz femtosecond Ti:sapphire laser

J. R. Demers and Frank C. DeLucia  »View Author Affiliations

Optics Letters, Vol. 24, Issue 4, pp. 250-252 (1999)

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An 800-MHz self-mode-locked femtosecond Ti:sapphire laser has been developed whose mode-lock frequency can be robustly scanned and modulated. The laser is based on the three-element design of Ramaswamy-Paye and Fujimoto [Opt. Lett. 19, 1756 (1994)]. By translation and modulation of the position of the prismatic output coupler, the mode-lock frequency can be reliably scanned more than 1% and modulated at 80 Hz with a deviation of 2.5 kHz without interrupting the mode lock, changing the pulse length, or inducing significant amplitude modulation. An application in tunable high-resolution terahertz spectroscopy is also demonstrated.

© 1999 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3590) Lasers and laser optics : Lasers, titanium
(220.4880) Optical design and fabrication : Optomechanics
(320.5550) Ultrafast optics : Pulses

J. R. Demers and Frank C. DeLucia, "Modulating and scanning the mode-lock frequency of an 800-MHz femtosecond Ti:sapphire laser," Opt. Lett. 24, 250-252 (1999)

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