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Analysis of a model of a far-infrared laser
Journal of the Optical Society of America B, 1986We study a model of a far-infrared laser that was recently shown to explain a number of experimental results adequately. In a systematic way we perform linear stability analyses analytically. This determines up to four bifurcation diagrams in steady state, two of which are rather exceptional: In one case the whole branch of finite intensity is unstable,
Xiao-Guang Wu, Paul Mandel
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A far-infrared gas-discharge laser
Fourth International Kharkov Symposium 'Physics and Engineering of Millimeter and Sub-Millimeter Waves'. Symposium Proceedings (Cat. No.01EX429), 2002One of the most expensive elements of the HCN laser is the resonator. The size of the laser is in principle determined by the size of the resonator. The resonator of the LF pumping laser used in medical studies includes a glass discharge tube with two soldered-in glass branch pipes with electrodes of excitation.
E.M. Kuleshov +3 more
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Laser Spectroscopy in the Submillimeter and Far-Infrared Regions [PDF]
, 2006 Research in the submillimeter and far-infrared (SMFIR) regions of the electromagnetic spectrum (1000 to 150 pm, 0.3 to 2.0 THz; and 150 to 20 pm, 2.0 to 15 THz, respectively) had been relatively inactive until allout, 25 years ago. Three events were responsible for enhanced activity in this part of the electromagnetic spectrum: the discovery of far ...
John M. Brown, Kenneth M. Evenson
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EPR in LiHoF4 with a far infrared laser
Journal of Physics and Chemistry of Solids, 1985Abstract A low-temperature FIR spectrometer was used for measuring EPR of LiHoF 4 in the field range 0–7 T, frequency range 150–1600 GHz. Zero field splittings and g -values for the lowest four energy levels are presented. Two sets of hyperfine lines were observed, corresponding to Δ m N = 0 and Δ m N = −1, each set with line spacings ...
I. Laursen, I. De Wolf, P. Janssen
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Superlattice QC lasers towards the far-infrared [PDF]
, 2001 At present efficient, compact, solid-state sources for the spectral range 1–10 THz, also known as the “terahertz gap”, are still lacking. Quantum cascade (QC) lasers possess the potential for the efficient generation of far-infrared light, although many important physical questions have to be addressed when the transition energy is reduced below the ...
Tredicucci A +7 more
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Tunable Far Infrared Laser Spectroscopy
1988Tunable far-infrared (FIR) radiation has been generated using CO2 laser difference generation in metal-insulator-metal diodes either from the difference between a fixed frequency CO2 laser and a tunable waveguide laser, or from the difference between two fixed frequency CO2 lasers plus microwave sidebands.
D. A. Jennings +2 more
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Far-Infrared Laser Sideband Spectroscopy of the NH2Radical
Journal of Molecular Spectroscopy, 1998We have constructed a far-infrared (FIR) laser sideband spectrometer for carrying out pure rotational spectroscopy of fundamental radicals and ions in the FIR or "terahertz" frequency region. The tunable FIR source is obtained by sideband generation of a carbon dioxide laser-pumped FIR laser with a GaAs Schottky barrier diode.
Hiroyuki Ozeki, Shuji Saito
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Far infrared laser lines and assignments of CH3OH: a review
International Journal of Infrared and Millimeter Waves, 1992Methyl alcohol is the most important lasing molecule in the Far-Infrared (FIR) spectral region, and the most widely used for investigation and for applications. Since the last critical review of 1984, over seventy papers have been published dealing with the FIR laser lines and the infrared spectroscopy of CH3OH.
Moruzzi, G. +2 more
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Tunable Far Infrared Semiconductor Lasers
Physica Scripta, 1987A review of recent investigations on tunable far infrared semiconductor lasers on hot holes in Ge are given. This laser operates due to inverted hot hole distributions caused by the accumulation of carriers in crossed E and B fields in special regions of the momentum space. A radiative transition responsible for the simulated emission is the transition
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High Power Far-Infrared Lasers
SPIE Proceedings, 1986Recently, there has been significant progress made in the attainment of very high c.w. power levels from optically pumped FIR lasers. These successes have relied on just a few power enhancement techniques which have been applied in the presence of high pump power. Power levels approaching 1 Watt have been observed on a few particularly strong lines.
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