Steady-state Kinetics of Br(²P_1/2) yields CO₂(101) Electronic-to-Vibrational Energy Transfer Laser System

Author

Stephen J. Karis

Date of Award

11-1995

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Glen P. Perram, PhD

Abstract

Steady state photolysis experiments were conducted to gain information relevant to the construction of a continuous wave electronic to vibrational pumped infrared laser. An Ar⁺ laser =488 µm) was used to produce the electronically excited state Br(²P_1/2) (Br^*) via photolysis of molecular bromine. Energy was then transferred to the near resonant vibrational state CO₂(101) (CO₂) via the collisional quenching of Br^* by CO₂. The dependence of the 2.71 µm Br^* and 4.3 µm CO₂ emissions on CO₂ pressure was measured, as well as the dependence of the 4.3 µm emission on pump laser chopping frequency. Unexpected results were obtained in both cases, indicating more detailed modeling of kinetic processes is called for. Additionally, an unexplained long term decay in the 4.3 µm signal was observed, which may have bearing on the construction of closed system laser devices. Recommendations are made for further research.

AFIT Designator

AFIT-GAP-ENP-95-11

DTIC Accession Number

ADA306124

Comments

Plain-text title form: Steady-State Kinetics of Br(2P 1/2) yields CO2(101) Electronic-to-Vibrational Energy Transfer Laser System

Recommended Citation

Karis, Stephen J., "Steady-state Kinetics of Br(²P_1/2) yields CO₂(101) Electronic-to-Vibrational Energy Transfer Laser System" (1995). Theses and Dissertations. 6126.
https://scholar.afit.edu/etd/6126