Interferometric investigation of a diode laser source

Journal Article · Wed May 01 04:00:00 EDT 1985 · Appl. Opt.; (United States)

DOI:https://doi.org/10.1364/AO.24.001291· OSTI ID:5669756

Creath, K

Diode lasers provide a coherent light source in the near IR. They have many desirable characteristics such as small size, high efficiency, a single-longitudinal mode output as large as 15 mW, and can be modulated at high pulse rates. An AlGaAs diode laser operating at 840 nm with an output of 5 mW was evaluated with a Smartt point diffraction interferometer. The wave front observed had astigmatism of approx.2 lambda present over the output beam divergence angle. In a modified Twyman-Green interferometer, the coherence length measured was >15 m with high visibility fringes. This source was found to be stable and highly linearly polarized. When used as an interferometric source, many possibilities for small scale interferometers and test equipment are now viable.

• Research Organization: University of Arizona, Optical Sciences Center, Tucson, Arizona 85721.
• OSTI ID: 5669756
• Journal Information: Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 24:9; ISSN APOPA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
INTERFEROMETRY
LASERS
PERFORMANCE
SOLID STATE LASERS