Excess-noise dependence on intracavity aperture shape

Karman, GP; Mcdonald, GS; Woerdman, JP; New, GHC

Abstract

In lasers with nonorthogonal eigenmodes the excess-noise factor K can be large, especially in unstable-cavity lasers with hard-edged intracavity apertures. To the best of our knowledge, we report the first detailed study of the dependence of K on aperture shape. Calculations and measurements of K for unstable-cavity lasers with variable-size apertures of triangular, square, pentagonal, hexagonal, octagonal, and rhomboid symmetries are summarized. It is shown that both the magnitude of K and its resonant behavior strongly depend on aperture shape and that many aspects of this dependence can be explained in terms of one-dimensional resonance lengths.

Citation

Karman, G., Mcdonald, G., Woerdman, J., & New, G. (1999). Excess-noise dependence on intracavity aperture shape. Applied Optics, 38(33), 6874-6878. https://doi.org/10.1364/AO.38.006874

• Journal Article Type: Article
• Publication Date: Jan 1, 1999
• Deposit Date: Oct 14, 2011
• Publicly Available Date: Apr 5, 2016
• Journal: Applied Optics
• Print ISSN: 1559-128X
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 38
• Issue: 33
• Pages: 6874-6878
• DOI: https://doi.org/10.1364/AO.38.006874
• Publisher URL: http://dx.doi.org/ 10.1364/AO.38.006874