Journal ArticleDOI
Generation of optical pulses shorter than 0.1 psec by colliding pulse mode locking
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TLDR
In this article, a novel passive mode-locking technique was proposed in which two synchronized counterpropagating pulses interact in a thin, saturable absorber to produce a short pulse.Abstract:
We report a novel passive mode‐locking technique in which two synchronized counterpropagating pulses interact in a thin, saturable absorber to produce a short pulse. Continuous stable trains of pulses shorter than 0.1 psec are obtained using a ring laser configuration.read more
Citations
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Journal ArticleDOI
Pulse compression in a free electron laser amplifier
F. Hartemann,Ke Xu,George Bekefi +2 more
TL;DR: In this article, a frequency-chirped pulse is injected into the FEL interaction region, and only the resonant frequency band of the pulse is actively amplified, resulting in a short pulse of high power coherent radiation at the output of the laser.
Journal ArticleDOI
Coherent Lattice Vibrations in Bi and Sb
Abstract: Femtosecond time-resolved optical techniques have been shown to generate coherent phonons in some semimetals and narrow gap semiconductors A previously-reported model describes the mechanism for generation of coherent lattice vibrations via the optically excited carriers One of the most interesting consequences of such coherent lattice motion is the modulation of the electronic bands - and possibly of the transport properties of the material - at a THz timescale Preliminary results are given for a band structure calculation, performed to evaluate the magnitude of these laser-induced band shifts
Proceedings ArticleDOI
Subpicosecond time-resolved multiphotonionization: excited state dynamics of cis-stilbene in collision-free conditions
B. I. Greene,R. C. Farrow +1 more
References
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Journal ArticleDOI
Pulse evolution in mode-locked quasi-continuous lasers
TL;DR: In this article, a model of a passively mode-locked quasi-continuous laser is discussed and the evolution of pulses in various cavity configurations is traced and the combined action of amplifier and absorber saturation is shown to lead to rapid pulse compression even when the pulse duration is far shorter than the relaxation time.
Journal ArticleDOI
Tunable distributed‐feedback dye laser
TL;DR: In this article, an efficient broadly tunable dye-laser action with a narrow line output has been demonstrated with a mirrorless laser system using distributed feedback, which was obtained from a spatial modulation of both gain and index of refraction induced by pumping a liquid organic dye solution with fringes formed by the interference of two coherent light beams.
Journal ArticleDOI
Passive mode locking of the cw dye laser
TL;DR: In this article, a stable continuous output of picosecond pulses has been achieved using second-harmonic generation (SHG) measurements, and the pulses are transform limited and are wavelength tunable over the range 5900-6100 A.