Optically-pumped far-infrared laser lines in hydrazine, methanol, heavy water, and ammonia: New laser lines and frequency measurements

Citation
Ecc. Vasconcellos et al., Optically-pumped far-infrared laser lines in hydrazine, methanol, heavy water, and ammonia: New laser lines and frequency measurements, INT J INFRA, 21(5), 2000, pp. 725-730
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
ISSN journal
0195-9271 → ACNP
Volume
21
Issue
5
Year of publication
2000
Pages
725 - 730
Database
ISI
SICI code
0195-9271(200005)21:5<725:OFLLIH>2.0.ZU;2-E
Abstract
A far-infrared laser cavity designed to favor short-wavelength laser lines was used to generate optically-pumped far-infrared laser radiation. New far -infrared laser lines were discovered in hydrazine, heavy water, ammonia, a nd several short-wavelength lines previously discovered in methanol were ob served. Wavelength, frequency, and relative intensity measurements were per formed on laser lines in the wavelength range 42.4 to 253.7 mu m. Each far- infrared frequency measurement was obtained by mixing the far-infrared radi ation with radiation from two reference CO2 lasers and from a microwave syn thesizer in a metal-insulator-metal diode. The pump laser was a high-Q Fabry Perot resonator oscillating on 275 gratin g-selected laser lines lincluding regular, sequence, and hot band lines.