Paper
6 February 2012 Characterization of the longitudinal Gouy phase branches in cascaded optical systems
K. Sudha Nirmala, Surya P. Tewari
Author Affiliations +
Abstract
The Gouy phase is an important phase, however rather poorly understood. It has been shown recently that it can be used to control the frequency of a ring laser and can help in achieving a control over mode-locking problem of ring laser gyro. It is demonstrated now that with the help of the Gouy phase one discovers further characterization of a laser involving cascaded optics in terms of what may be called longitudinal Gouy phase branches. On such a Gouy phase branch one can tune the laser in a manner described elsewhere. It is noted that the longitudinal Gouy-phase-branches play significant role in cascaded optical systems as well as have potential characterization feature in several ring configurations that get naturally selected in a random lasing medium. The concept is further clarified with Collins chart diagrams of several cascaded optics lasers.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Sudha Nirmala and Surya P. Tewari "Characterization of the longitudinal Gouy phase branches in cascaded optical systems", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 823614 (6 February 2012); https://doi.org/10.1117/12.908084
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KEYWORDS
Laser optics

Quantum cascade lasers

Gaussian beams

Random lasers

Mode locking

Phase shifts

Gyroscopes

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