We demonstrate an ultrashort all-fiber-integrated chirped-pulse amplification system yielding 1-ps pulses with 20 kW of peak power. 40-ps initial pulses generated by an externally modulated laser diode are chirped by self-phase modulation in a conventional fiber, amplified, and compressed in 110 m of air-core photonic bandgap fiber. The compressed pulses are frequency doubled in a periodically poled KTP crystal with up to 48% efficiency and applied to supercontinuum generation in a holey fiber, resulting in a high-power uniform continuum that stretches from 430 to 1450 nm.
© 2005 Optical Society of America
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.3510) Lasers and laser optics : Lasers, fiber
(190.2620) Nonlinear optics : Harmonic generation and mixing
(320.5520) Ultrafast optics : Pulse compression
(320.7120) Ultrafast optics : Ultrafast phenomena
C. J. S. de Matos, R. E. Kennedy, S. V. Popov, and J. R. Taylor, "20-kW peak power all-fiber 1.57-µm source based on compression in air-core photonic bandgap fiber, its frequency doubling, and broadband generation from 430 to 1450 nm," Opt. Lett. 30, 436-438 (2005)