Picosecond spin-polarized photoemission studies of magnetic materials (invited) (abstract)
- Stimulated emission in ridge quantum wire laser structures measured with optical pumping and microscopic imaging methods. Watanabe, Shinichi; Koshiba, Shyun; Yoshita, Masahiro; Sakaki, Hiroyuki; Baba, Motoyoshi; Akiyama, Hidefumi // Applied Physics Letters;7/27/98, Vol. 73 Issue 4
We report the observation of stimulated emission in ridge quantum wire (QWR) structures at temperatures from 4.7 to 290 K. To examine the origin of the stimulated emission, the spatially and spectrally resolved microscopic images of the emission were measured. It was most likely attributed to...
- Experimental investigation of the relative importance of carrier heating and.... Girardin, Francois; Duan, Guang-Hua // Applied Physics Letters;8/7/1995, Vol. 67 Issue 6, p771
Evaluates the transverse spontaneous emission in multi-quantum-well lasers. Use of transverse spontaneous emission to characterize gain suppression in semiconductor lasers; Application of high speed semiconductor lasers to optical transmission systems; Details on the carrier heating in...
- Optically pumped (GaIn)As/Ga(PAs) vertical-cavity surface-emitting lasers with optimized dynamics. Ellmers, C.; Hofmann, M.R. // Applied Physics Letters;3/8/1999, Vol. 74 Issue 10, p1367
Studies a vertical-cavity surface-emitting laser structure optimized for fast intrinsic emission dynamics. Quality of the epitaxial growth; Dynamical response of the structure after femtosecond optical excitation; Picosecond dynamics at room temperature.
- High current, small divergence electron beams produced by laser-induced surface photoelectric effect. Charalambidis, D.; Hontzopoulos, E.; Fotakis, C.; Farkas, Gy.; T�th, Cs. // Journal of Applied Physics;4/1/89, Vol. 65 Issue 7, p2843
Examines the potential application of the laser induced linear surface photoelectric effect for high current and small divergence electron beam formation. Electron emission from metal surfaces induced by high-intensity laser light; Details on the experiment; Discussion of findings.
- Resonantly enhanced, frequency doubling of an 820 nm GaAlAs diode laser in a potassium lithium.... Reid, J.J.E. // Applied Physics Letters;1/4/1993, Vol. 62 Issue 1, p19
Examines doubling of resonantly enhanced emission of an 820 nanometer gallium aluminum arsenide diode laser. Measurement of enhancement factor in quasi-continuous wave operation; Description and comparison of optical quality of crystal with KNbO[sub 3]; Applicability of crystal for the...
- X-ray emission from laser-irradiated gas puff targets. Fiedorowicz, H.; Bartnik, A.; Patron, Z.; Parys, P. // Applied Physics Letters;5/31/1993, Vol. 62 Issue 22, p2778
Examines the x-ray emission from plasma produced by laser irradiation of gas puff targets. Creation of the gas puff targets by pulse injection of gas into a vacuum chamber; Use of a neodymium-glass laser; Spatial, spectral and temporal measurement of the emission.
- Nonlinearity and inversion of femtosecond single- and two-photon photoelectric emission.... Girardeau-Montaut, J.P.; Girardeau-Montaut, C. // Applied Physics Letters;6/27/1994, Vol. 64 Issue 26, p3664
Measures the two-photon photoemission sensitivity of gold for three incidence angles of a p-polarized laser beam. Consequences of the thermal nonequilibrium between electron gas and the lattice at the gold surface; Variations of photoemission sensitivities of gold; Dependence of the energy...
- Widely tunable efficient intracavity quasiphase-matched midinfrared generation. Wang, Gary Y.; Jing Zhao; Qiushui Chen; Conin-Golomb, Mark // Applied Physics Letters;4/28/1997, Vol. 70 Issue 17, p2218
Presents an approach for obtaining a tunable midinfrared laser output. Application of quasiphase-matched frequency generation in a periodically domain inverted crystal inside a laser cavity; Output generated with the use of 1.8 watts of red diode or dye laser pumping; Control of wavelength...
- Photoemission from U and Mg using a pulsed XeCl laser. Ivri, J.; Levin, L.A. // Applied Physics Letters;3/22/1993, Vol. 62 Issue 12, p1338
Examines results of photoemission from metal cathodes using a pulsed xenon chloride laser. Photon source; Obtainment of the photocurrent density, quantum efficiency and brightness for a uranium cathode; Examination of space charge limited and emission limited photoelectrons.