Title :
Determination of singlet-oxygen generator efficiency on a 10-kW class supersonic chemical oxygen-iodine laser (RADICL)
Author :
Kendrick, Kip R. ; Helms, Charles A. ; Quillen, Brian G.
Author_Institution :
Res. Lab., Kirtland AFB, NM, USA
fDate :
12/1/1999 12:00:00 AM
Abstract :
With the advent of the Air Force Airborne Laser program, the emphasis of chemical oxggen-iodine laser (COIL) research has shifted toward improving the overall efficiency. A key component of the COIL is the singlet-oxygen generator (SOG). To assess the efficiency of the SOG, an accurate method of determining the yield of O2(a1 Δg), [O2(a1Δg )]/[O2(total)] where [O2(total)]=[O2 (a1Δg)]+[O2(X3 Σg-)], has been developed. Absorption measurements of ground-state oxygen utilizing the magnetic-dipole transition, O2(X3Σg-) (ν=0)→O2(b1Σg +)(ν=0) centered at 762 nm, have been obtained using a scanning diode laser in conjunction with a multiple-pass Herriott cell and balanced-ratiometric detection on the 10-kW class supersonic COIL (RADICL). A series of experiments was designed and conducted to test the efficiency of the SOG under various conditions
Keywords :
chemical lasers; iodine; laser transitions; laser variables measurement; optical scanners; oxygen; radiometry; supersonic flow; 10 kW; 762 nm; Air Force Airborne Laser program; COIL; O2-I; RADICL; absorption measurements; balanced-ratiometric detection; chemical oxggen-iodine laser; ground-state oxygen; kW class supersonic COIL; kW class supersonic chemical oxygen-iodine laser; magnetic-dipole transition; multiple-pass Herriott cell; overall efficiency; scanning diode laser; singlet-oxygen generator; singlet-oxygen generator efficiency; Absorption; Atom lasers; Atomic beams; Calibration; Chemical industry; Chemical lasers; Ducts; Gas lasers; Laser transitions; Paramagnetic resonance;
Journal_Title :
Quantum Electronics, IEEE Journal of
