Applied Physics Letters

Phonon-induced planar voltages in thin metallic films

R. J. von Gutfeld, E. E. Tynan, and H. F. Budd
We have irradiated slant-angle-deposited metallic films on sapphire substrates with pulses of incoherent phonons and observed voltages in the plane of the sample. These voltages are very similar in character to those previously observed using laser irradiation as the excitation source. The new data ... [Appl. Phys. Lett. 28, 78 (2008)] published Thu Aug 28, 2008.

Observation of level anticrossing in nonlinear absorption

Jun Sakai and Mikio Katayama
Stark-tuned level anticrossing between hyperfine levels was observed in the nonlinear absorption of the CDI nu P (4,1) transition by using the CO laser line. Good agreement between the theoretical and the observed linewidth was obtained. ... [Appl. Phys. Lett. 28, 119 (2008)] published Thu Aug 28, 2008.

Measurement of intense magnetic fields associated with laser - produced plasmas

R. Serov and M. C. Richardson
Measurements have been made with subnanosecond resolution of the azimuthal magnetic field spontaneously associated with plasmas produced by high-intensity (1010 W/cm) 1-nsec-duration CO laser pulses. In addition to a distinct dependence on background argon gas pressure, it is found that the magnetic ... [Appl. Phys. Lett. 28, 115 (2008)] published Thu Aug 28, 2008.

Observation of first Stokes, second Stokes, and anti-Stokes radiation from a mercury cadmium telluride spin-flip Raman laser

Paul W. Kruse
Single-crystal HgCdTe has been employed in a spin-flip Raman laser to generate first Stokes and anti-Stokes radiation when pumped at 10.60 [mu]m, and first Stokes, second Stokes, and anti-Stokes radiation when pumped at 10.28 [mu]m. ... [Appl. Phys. Lett. 28, 90 (2008)] published Thu Aug 28, 2008.

Optical backward parametric fluorescence in sodium nitrite

D. S. Chemla and E. Batifol
We present the first observation of optical backward-traveling-wave (BTW) parametric fluorescence, in a sodium nitrite crystal pumped by a coumarin dye laser. Several aspects of BTW parametric interactions are discussed. This experiment provides a feasibility test of optical BTW parametric oscillato ... [Appl. Phys. Lett. 28, 135 (2008)] published Thu Aug 28, 2008.

dc-excited and sealed-off operation of the optically pumped 546.1-nm Hg laser

Max Artusy, Neil Holmes, and A. E. Siegman
The optically pumped Hg laser at 546.1 nm, first developed by Djeu and Burnham, has now been operated as a sealed-off rather than continuously flowing system, and with dc-excited rather than rf-excited pump lamps in both elliptically focused and close-wrapped configurations. Laser power outputs of ~ ... [Appl. Phys. Lett. 28, 133 (2008)] published Thu Aug 28, 2008.

Experimental evidence of laser-induced separations in bulk gas mixtures

Edgar A. Rinehart, Jeffery H. Richardson, David C. Johnson, and Lawrence W. Hrubesh
Radiation from a cw CO laser is used to separate SF molecules from helium molecules in a bulk mixture of each, by resonant radiation pressure. These experimental results demonstrate that selective absorption of radiation can cause physical separations of molecules within a diffusion-limited geometry ... [Appl. Phys. Lett. 28, 131 (2008)] published Thu Aug 28, 2008.

GHz tuning of a planar dye laser with single dispersive element

P. Burlamacchi and R. Pratesi
A new scheme for tuning a planar waveguide dye laser is presented. Because of the high gain produced in the waveguide structure, a high-dispersion slit-grating arrangement can be used as a feedback element of the laser. Output energy of a few tens of mJ, which corresponded to the saturated output of ... [Appl. Phys. Lett. 28, 124 (2008)] published Thu Aug 28, 2008.

Self-trapping of a laser beam in a cylindrical plasma column

M. D. Feit and J. A. Fleck, Jr.
The laser heating of an initially uniform plasma column has been modeled in a self-consistent way, including the effects of medium magnetohydrodynamics and refraction and diffraction of the laser light. The results show that a portion of the pulse can become trapped, leading to a pattern of alternat ... [Appl. Phys. Lett. 28, 121 (2008)] published Thu Aug 28, 2008.

Cd-diffused Pb[sub 1 - x]Sn[sub x]Te lasers with high output power

Wayne Lo
Cd-diffused PbSnTe (x~0.13) diode lasers have been fabricated with cw output powers of 1.25 mW (single mode) and 2.4 mW (total) at 10.6 [mu]m. These power levels are attributed to the low-temperature Cd diffusion, a new method of growing low-dislocation-density crystals, and to a contact resistance ... [Appl. Phys. Lett. 28, 154 (2008)] published Thu Aug 28, 2008.

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