Publication

New Cascade Laser Transitions in Ch2f2 Pumped with the 9r32 Line of a Cw Co2-Laser

1991
Journal Articles

Abstract

New cascade laser transitions of (CH2F2)C-12 at 172.50-mu-m, 208.83-mu-m, 220.44-mu-m, 223.99-mu-m and 250.61-mu-m are reported. A waveguide FIR laser was pumped with a quasi cw (CO2)-C-12-O-16 laser operating on the 9R32 line. Together with the already known lines at 184.3-mu-m, 196.1-mu-m and 235.9-mu-m, the laser lines can be assigned to rotational transitions in the nu-9 vibrational band of (CH2F2)-C-12 and to refill transitions of the vibrational ground state nu-0.

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1991
Journal Articles

Abstract

Official source

Related concepts (24)

Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation. The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light that is coherent.

Laser pumping

Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms. When the number of particles in one excited state exceeds the number of particles in the ground state or a less-excited state, population inversion is achieved. In this condition, the mechanism of stimulated emission can take place and the medium can act as a laser or an optical amplifier. The pump power must be higher than the lasing threshold of the laser.

Carbon-dioxide laser

The carbon-dioxide laser (CO2 laser) was one of the earliest gas lasers to be developed. It was invented by Kumar Patel of Bell Labs in 1964 and is still one of the most useful types of laser. Carbon-dioxide lasers are the highest-power continuous-wave lasers that are currently available. They are also quite efficient: the ratio of output power to pump power can be as large as 20%. The CO2 laser produces a beam of infrared light with the principal wavelength bands centering on 9.6 and 10.6 micrometers (μm).

Related publications (13)

New Cascade Laser Transitions in Ch2f2 Pumped with the 9r32 Line of a Cw Co2-Laser

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