Atmospheric propagation properties of various laser systems

Greg A. Pitz; Sara Glass; Brian Kamer; Wade L. Klennert; David A. Hostutler

doi:10.1117/12.921251

16 May 2012 Atmospheric propagation properties of various laser systems

Greg A. Pitz, Sara Glass, Brian Kamer, Wade L. Klennert, David A. Hostutler

Proceedings Volume 8380, Atmospheric Propagation IX; 83800V (2012) https://doi.org/10.1117/12.921251
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Atmospheric propagation properties of various laser systems, including diode pumped alkali lasers (DPALs) and the Chemical Oxygen Iodine Laser (COIL), are of importance. However, there appears to be a lack of highly accurate transmission characteristics of these systems associated with their operating conditions. In this study laser propagation of the rubidium-based DPAL and the COIL has been simulated utilizing integrated cavity output spectroscopy. This technique allowed for the simulation of laser propagation approaching distances of 3 kilometers on a test stand only 35 cm long. The spectral output from these simulations was compared to the HITRAN database with excellent agreement. The spectral prole and proximity of the laser line to the atmospheric absorbers is shown. These low pressure spectral proles were then extrapolated to higher pressures using an in-house hyperne model. These models allowed for the comparison of proposed systems and their output spectral prole. The diode pumped rubidium laser at pressures under an atmosphere has been shown to interact with only one water absorption feature, but at pressures approaching 7 atmospheres the D1 transition may interact with more than 6 water lines depending on resonator considerations. Additionally, a low pressure system may have some slight control of the overlap of the output prole with the water line by changing the buer gases.

Citation Download Citation

Greg A. Pitz, Sara Glass, Brian Kamer, Wade L. Klennert, and David A. Hostutler "Atmospheric propagation properties of various laser systems", Proc. SPIE 8380, Atmospheric Propagation IX, 83800V (16 May 2012); https://doi.org/10.1117/12.921251

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