Halogen hydride lasers with vibrational energy transfer from metastable diatomic molecules

Journal Article · Mon May 01 04:00:00 EDT 1978 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1978v008n05ABEH010148· OSTI ID:6443774

Igoshin, V I; Oraevskii, A N

The possibiliy of obtaining efficient coherent emission due to vibrational--rotational transitions in the halogen hydrides HF, DF, HCl, DCl, HBr, and DBr during vibrational energy transfer from slowly relaxing (metastable) diatomic molecules of H/sub 2/, HD, D/sub 2/, N/sub 2/, and CO is demonstrated theoretically. It is proposed that the metastable molecules be excited by electrical preionization. A detailed analysis is made of an H/sub 2/+HF+Ar system and the influence of the main factors determining the laser efficiency is identified: radiation spectrum (number of rotational sublevel J), initial gas temperature, proportions of the components, and specific energy input. An estimate is made of the opimal value of e/P (approx. 3Vxcm/sup -1/xTorr/sup -1/). It is concluded that under optimal conditions the efficiency of these lasers may reach 40--50% for H/sub 2/ + HF, HD + HCl, and D/sub 2/ + HBr systems, and 50--70% for N/sub 2/ + DBr and CO + DBr systems without the active medium being cooled.

• Research Organization: P. N. Lebedev Physics Institute, Academy of Sciences of the USSR, Moscow
• OSTI ID: 6443774
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 8:5; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CHEMICAL COMPOSITION
CHEMICAL LASERS
DEUTERIUM COMPOUNDS
EFFICIENCY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
HYDROBROMIC ACID
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LASERS
METASTABLE STATES