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Dark-pulse propagation in optical fibers
(American Physical Society, 1988-01-04)
We report measurements of the reshaping of 0.3-psec dark pulses due to their passage through 10 m of single-mode optical fiber. The measurements were performed as a function of intensity and the observed strong reshaping ...
Velocity distributions of sputtered excited atoms
(American Physical Society, 1982-02-08)
The first direct measurements are reported of the velocity distributions of sputtered atoms in excited states with electronic configurations completely different from the ground state. In contrast to previous work, the ...
Observation of electromagnetic shock waves from propagating surface-dipole distributions
(American Physical Society, 1989-06-19)
We have directly measured the time-dependent electromagnetic shock wave generated by an electric surface-dipole distribution propagating faster than the phase velocity in the underlying dielectric substrate. The results ...
Ultrafast light-controlled optical-fiber modulator
(AIP Publishing, 1987-04-06)
We report the ultrafast operation of a light-controlled optical-fiber modulator, driven by subpicosecond, compressed, and amplified (6000 A) dye laser pulses, controlling frequency doubled (5320 A) yttrium aluminum garnet ...
Observation of the formation of the 0-pi pulse
(American Physical Society, 1984-08-06)
We have measured with 0.5-psec resolution the reshaping of small-area 7-psec laser pulses to 0-pi pulses due to their passage through an optically thick sodium cell. The reshaped pulses have a picosecond oscillatory structure ...
Measurement of the velocity distribution of sputtered Na atoms from NaCl by Doppler shift laser fluorescence
(AIP Publishing, 1981-11-01)
The velocity distribution of sputtered Na atoms from NaCI during 15 keV, Ar+ bombardment was measured by a Doppler shift laser fluorescence technique. Contrary to other measurements, the sputtered Na atoms were found to ...
Far infrared spectroscopy with subpicosecond electrical pulses on transmission lines
(AIP Publishing, 1987-08-17)
Optically generated and detected electrical pulses on transmission lines in the subpicosecond range have frequencies extending up to 1 THz, thereby covering the far infrared region of the spectrum from 0 to 30 cm^-1. We ...
Point source terahertz optics
(AIP Publishing, 1988-10-17)
We demonstrate an ultrafast 10 micro-m sized, electric dipole source of terahertz radiation closely coupled to a 1 cm spherical mirror. This optical approach has the advantages of subpicosecond response times with essentially ...
Observation of the formation of an optical intensity shock and wave breaking in the nonlinear propagation of pulses in optical fibers
(American Physical Society, 1989-01-30)
We have observed the formation of an optical intensity shock and the subsequent wave breaking in the nonlinear propagation of 1-psec pulses in an optical fiber. The wave breaking manifests itself as the appearance of ...
High-brightness terahertz beams characterized with an ultrafast detector
(AIP Publishing, 1989-07-24)
We have significantly improved the emission and detection of electromagnetic beams of single-cycle 0.5 THz pulses, through the use of new dipolar antenna structures. The frequency response was extended to well beyond the ...