Laser Phase Front Measurements Using a Phase Conjugate Twyman-Green Interferometer

Author

William J. Mandeville

Date of Award

12-1992

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Engineering Physics

First Advisor

Won B. Roh, PhD

Abstract

This study demonstrated the use of a phase conjugate TwymanGreen interferometer for measuring the phase fronts of beams emitted by infrared diode lasers operating at 830 nm. This interferometer successfully measured the phase front of a single element diode laser, providing better resolution than its conventional counterpart. The phase conjugate mirror compensated for aberrations introduced by imperfect optics in the phase conjugating arm of the interferometer. This interferometer was unable to measure the phase front of a diode array due to the array's inability to create a phase conjugate return. The array's short coherence length is believed to be the main cause preventing the phase conjugate return.

AFIT Designator

AFIT-GEP-ENP-92-D-08

DTIC Accession Number

ADA258821

Comments

The author's Vita page is omitted.

Recommended Citation

Mandeville, William J., "Laser Phase Front Measurements Using a Phase Conjugate Twyman-Green Interferometer" (1992). Theses and Dissertations. 7188.
https://scholar.afit.edu/etd/7188