Journal ArticleDOI
Performance characteristics of a transverse‐flow, oxygen‐iodine chemical laser in a low gas‐flow velocity
Reads0
Chats0
TLDR
A transverse flow, oxygeniodine chemical laser which operates at a low level (8 m/s) of linear flow gas velocity using a small size vacuum pump is reported in this article.Abstract:
Performance characteristics are reported for a transverse‐flow, oxygen‐iodine chemical laser which operates at a low level (8 m/s) of linear flow gas velocity using a small size vacuum pump. This is the first time that dependences of laser output power have experimentally been found on Cl2 and I2 flow rates. Output powers in excess of 10 W have been efficiently extracted from a 50×0.5‐cm rectangular flow duct. A total energy of 11 kJ from one gram of iodine has been obtained. The reaction mechanisms associated with the power decrease in high concentrations of I2 are carefully discussed.read more
Citations
More filters
Journal ArticleDOI
Modeling of mixing in chemical oxygen‐iodine lasers: Analytic and numerical solutions and comparison with experiments
TL;DR: In this article, the effect of mixing on the operation of the COIL is studied theoretically applying a simple one-dimensional leaky stream tube model and the results are compared to available experimental data.
Journal ArticleDOI
The chemical oxygen‐iodine laser: Comparison of a theoretical model with experimental results
S. Churassy,R. Bacis,Annie J. Bouvier,Claire Pierre dit Mery,Bernard Erba,Jehuda Bachar,Salman Rosenwaks +6 more
TL;DR: In this paper, the experimental performance of a small-scale chemical oxygen-iodine laser is compared to a theoretical model, and it is shown that hyperfine relaxation rates in the iodine atom increase both the laser threshold and the active transverse length of the cavity.
Journal ArticleDOI
Chemical oxygen iodine laser of extremely high efficiency
TL;DR: In this article, a chemical oxygen iodine laser with industrial uses in mind was developed, achieving a maximum overall efficiency of 40% at a power level of 200 W. This efficiency makes the running cost of the iodine laser comparable to that of typical yttrium-aluminum-garnet lasers.
Journal ArticleDOI
A highly efficient, compact chemical oxygen-iodine laser
TL;DR: In this article, the dependence of the laser output power on the flow velocity at a cavity for a compact chemical oxygen-iodine laser is reported, and the maximum overall reaction efficiency of 16.8% with the chlorine flow rate of 413 mmol/min is obtained.
Journal ArticleDOI
Efficiency of chemical oxygen‐iodine lasers: Theoretical simulation and experiment
TL;DR: In this article, a theoretical study on the efficiency of chemical oxygen-iodine laser (COIL) oscillators is described together with experimental data obtained using an efficient COIL system, which yielded a high-extractable power efficiency of 75%, which is comparable to the theoretically determined attainable value of 88%.
References
More filters
Journal ArticleDOI
An electronic transition chemical laser
TL;DR: In this article, the 2P1/2→2P3/2 transition of the iodine atom was achieved by energy transfer from the 1Δ metastable state of O2.
Journal ArticleDOI
Efficient operation of a 100‐W transverse‐flow oxygen‐iodine chemical laser
TL;DR: In this article, a trasverseflow oxygen-iodine laser was used for the extraction of chemically generated O2(1Δ) energy, and the measured power extraction efficiency with off-optimal outcoupling was 15%.
Journal ArticleDOI
The radiative lifetime of the metastable iodine atom I(52P1/2)
R.G. Derwent,Brian Arthur Thrush +1 more
TL;DR: In this article, traces of iodine are added to discharged oxygen from which atomic oxygen has been removed, and the equilibrium is rapidly established, and a comparison of the intensities of emission by O 2 ( 1 Δ g ) and I( 2 P 1/2 ) yields a radiative lifetime of 0.17 ± 0.04 sec for the latter.
Journal ArticleDOI
Chemically pumped iodine laser
R. J. Richardson,C. E. Wiswall +1 more
TL;DR: In this article, a chemically pumped iodine-atom laser is described based on electronic energy transfer to atomic iodine from chemically generated O2(1Δ) flow, with total extracted power (10 W) is approximately 3% of the power contained in the O 2(1 δ) flow.
Journal ArticleDOI
An efficient, small scale chemical oxygen‐iodine laser
J. Bachar,Salman Rosenwaks +1 more
TL;DR: More than 40% extractable power efficiency has been achieved in a transverse flow, small scale, chemically pumped iodine-atom laser as mentioned in this paper, where 5 W of cw laser emission at 1315 nm has been obtained via energy transfer from chemically generated O2(1Δ) to I atoms in a 10×1 cm2 rectangular flow duct.