Experimental study of gain and output coupling characteristics of a CW chemical oxygen-iodine laser
Abstract
Gain and output coupling characteristics of the CW chemical oxygen-iodine laser (COIL) are determined experimentally by means of varying the output coupling method. Under the conditions that the Cl2 flow rate is 11.8 mmol/s, the I2 molar flow rate is from 20 to 50 micromol/s, and the duct pressure is 200 Pa, the following were obtained from the experimental data: maximum values of output power of 58 W, an optimal output coupling factor of 1.50 percent, a resonator efficiency of 4.8 percent, an unsaturated small-signal gain of 1.55 x 10 to the -3/cm, a threshold small-signal gain of 1.31 x 10 to the -3/cm, a saturation intensity of 1150 W/sq cm, intraresonator losses of 9 percent, and an atomic iodine concentration of 2.85 x 10 to the 14th/cu cm. A comparison of these results to the published data of other COIL systems is presented.
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- June 1991
- DOI:
- 10.1109/3.89942
- Bibcode:
- 1991IJQE...27.1265S
- Keywords:
-
- Chemical Lasers;
- Continuous Wave Lasers;
- Coupled Modes;
- Iodine Lasers;
- Laser Outputs;
- Lasing;
- Power Gain;
- Mirrors;
- Oxygen;
- Lasers and Masers