Recombination-pumped triatomic hydrogen infrared lasers.

Capacitive-mesh output couplers for optically pumped far-infrared lasers.

The use of capacitive-mesh output couplers for optically pumped far-infrared molecular lasers has been extended throughout the far-infrared spectrum, between 42 microm and 1.2 mm, and the optimum grid constants have been found for several lines. At shorter wavelengths, performance has been improved by the use of a novel hybrid capacitive-mesh hole output coupler.

Optimization Of Plasmas For Recombination-Pumped Short-Wavelength Lasers

Diode-pumped mode-locked femtosecond 2-μm Tm:CaYAlO4 laser

Continuous-wave mode-locked femtosecond 2-m solid-state laser with a c-cut Tm:CaYAlO4 (6 at.%) as gain medium was experimentally demonstrated. The mode locked laser generated stable pulses with average output power as high as 531 mW, pulse duration of 496 fs, and repetition rate of 97 MHz at 1975 nm. The research results show that Tm:CaYAlO4 is an excellent gain medium for femtosecond pulse ge...

Infrared lasers in the circumstellar disk of MWC 349 ?

Observations of hydrogen recombination lines were made with the Infrared Space Observatory (ISO) towards the star MWC 349, where the α–transitions at short millimeter and submillimeter wavelengths have been found to be masers. Allα– lines in the ISO wavelength range from 2.4 to 190μm (quantum numbers n = 4 to 15) were detected. We find that amplification persists down to 19μm (n = 7), showing t...

Very Short Far-Infrared Pulses from Optically Pumped CH30H/D, CHsF, and HCOOH Lasers Using an EO-Switched