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Single-walled carbon nanotube saturable absorbers were designed for passive mode-locking near 1 μm. Using Yb:KYW and Yb:KLuW, nearly transform-limited sub-150 fs pulses were generated at 1037 nm and 1048 nm, respectively.
A linear optical method is demonstrated for extracting the carrier-envelope offset phase via the fringe visibility in a combined two-path multi-path interferometer. This method is applicable to a wider class of lasers than ƒ-to-2ƒ interferometry.
We propose and demonstrate a novel quasi-common-path variant of the ƒ-to-2ƒ interferometer that widely removes undesired residual phase drift from femtosecond pulse trains and improves the utility of stabilization schemes in frequency metrology and attophysics.
We investigate asymptotic pulse shapes arising from a balance of Kerr-type and plasma-mediated self-amplitude modulations. These self-stabilizing soliton-like solutions closely resemble experimental data and constitute the major mechanism for self-compression in femtosecond filaments.
Sub-10-fs pulse generation has reached a maturity and robustness that gave rise to a rapid increase of new ultrafast applications. Some of these novel applications rely on the octave-spanning spectral width, the coherence properties, or the extremely high peak intensity of femtosecond lasers, which sets them apart from the traditional use of femtosecond lasers in ultrafast spectroscopy. In this review,...
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