Optically pumped far infrared lasers
WebNormal methyl alcohol(CH 3 OH) pumped by CO 2 laser is known as the best FIR laser molecule. The exchage of H by D in the molecule does not shift the CO 2 laser absorption appreciably; all of its deuterated species falls in the 900–1100 cm-1 region of CO 2 laser spectrum. Laser action in CH 3 OD was first observed by Dyubko et al. in 1974, … WebA range of optically pumped, far infra-red (FIR) lasers are available for applications that require coherent radiation in the spectral range of 40 microns to 1.22 mm, the TeraHertz …
Optically pumped far infrared lasers
Did you know?
WebDec 31, 1996 · Abstract. Methanol and ten of its isotopomers have generated over 2000 far-infrared laser lines when pumped by CO{sub 2} lasers. The authors report here 28 new laser lines from the isotopomers {sup 12}CD{sub 3}OH, {sup 12}CH{sub 3}OD, {sup 12}CH{sub 2}DOH along with their frequencies, relative intensities, relative polarizations and pump … Web摘要：. The mathematical model of the optically pumped molecular laser has been built. The satisfactory fit of the computer simulation results with the experimental data has been established. The optimization of the CO laser with the optical pumping in (2,0) overtone was carried out by the numerical modeling methods. 关键词：.
WebOptically Pumped Far-Infrared Laser Laser & Light Sources Lasers FIR-/THz-Laser FIR-/THz-Laser Reference number: EDI-FIR The FIR-/THz lasers are optically pumped lasers used in … WebA new optically pumped far-infrared (FIR) laser with separate pump beam reflector and FIR output coupler has been developed. The new design greatly simplifies the tuning of the …
WebThe laboratory provides various laser sources and optical characterization systems dedicated to spectroscopy and imaging using time- and frequency-resolved laser-based techniques. ... kHz can be wavelength-tuned from ~300 nm in the UV to 3 micrometers in the infrared and can also provide pulses in the far infrared up to a 20 micrometers ... WebIn this paper we show that D218O vapour, optically pumped with a continuously tunable high pressure CO2 laser, is an excellent source for far infrared radiation. Both high photon conversion… 4 Narrow bandwidth emission from a mirrorless far-infrared 13 CH 3 F laser S. Evangelides, L. Carson, B. Danly, R. Temkin Physics 1987
WebAbstract. Difluoromethane, CH 2 F 2, is a relatively new CW optically-pumped Far Infrared (FIR) laser. A set of selection criteria, which were based on key molecular properties, was …
WebThe optical constants of Se and CdTe have been measured in the far ir from 10 cm−1 to 100 cm−1 using Fourier transform spectroscopy. An oscillator model has been fit to the available data for both materials over the entire ir range from 10 cm−1 to 10,000 cm−1. Several three-phonon absorption peaks have been observed and identified in the absorption spectra of … locks and bagelWebcy modulation of an optically pumped far infrared (FIR) laser operating at the 496-pm transition in CH3F. The development of FIR waveguii' ; lasers is a rapidly ex- panding field. This new tuning capability is expected to open up many useful applications in spectroscopy, telecommunications, and frequency standards. Of locks and beards devils lake ndWebIn optically pumped FIR lasers a molecular gas (e.g. methyl fluoride methyl alcohol, formic acid) is pumped by an external laser, usually a carbon dioxide laser. The FIR laser transitions typically takes place between adjacent rotational levels in an excited vibrational state. indications for knee steroid injectionWebA new optically pumped far-infrared (FIR) laser with separate pump beam reflector and FIR output coupler has been developed. The new design greatly simplifies the tuning of the laser and enables the optimization of the pump beam absorption without affecting the laser alignment. Working with formic acid (HCOOH) vapor pumped by a 30 W CO2 … locks and dams on ohio riverWebAbstract. We present both an innovative theoretical model and an experimental validation of a molecular gas optically pumped far-infrared (OPFIR) laser at 0.25 THz that exhibits 10 … locks and hinges for small wooden chestWebFeb 1, 1976 · A high power, far infra-red laser, pumped by a long pulse high energy CO 2 laser, has been developed to produce 8 μs pulses at 447 μm. The influence of the molecular weight of the far infra-red gas on the absorption of the pump energy is discussed. The results show that the heavy molecules are most convenient for long pulse far infra-red … locks and aqueductsWebAbstract. This work reports the discovery of 45 new optically pumped far-infrared (FIR) laser lines from CH 3 OD in the range 42.6 μm to 207.2 μm. A highly efficient CO 2 laser was used as the pump laser for an Optically-pumped Fabry-Perot FIR laser. The frequencies of most of the new lines were measured in the range 1.7 to 6.4 THz. locks and handles ballymount