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Updated: Jun 17, 2026

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Published on: March 19, 2016

Laser mode selection by internal reflection prisms.

L G Deshazer¹, E A Maunders

¹Aerospace Group, Hughes Aircraft Company, Culver City, California 90230, USA.

|January 9, 2010

Summary

This summary is machine-generated.

Critical internal reflection (CIR) using prisms achieved narrow angular selectivity in a Nd: glass laser. This technique enabled precise angular mode selection, with two-dimensional control demonstrated using Lummer-Gehrcke plates.

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Area of Science:

Optics and Photonics
Laser Physics

Background:

Laser cavities require precise control over optical modes for optimal performance.
Traditional mode selection methods can be complex or limited in angular resolution.

Purpose of the Study:

To introduce and demonstrate a novel method for angular mode selection in lasers.
To achieve high reflectivity and selectivity using internal reflection near the critical angle.

Main Methods:

Utilized internal reflection prisms to exploit sharp angular reflectivity variations near the critical angle.
Implemented the critical internal reflection (CIR) technique within a Nd: glass laser cavity.
Employed orthogonal Lummer-Gehrcke plates for two-dimensional angular mode selection.

Main Results:

Successfully produced a narrow angular range of high reflectivity within the laser cavity.
Demonstrated effective angular mode selection in a Nd: glass normal laser.
Achieved two-dimensional angular mode selection, indicating versatile spatial control.

Conclusions:

The critical internal reflection (CIR) technique offers a simple and effective approach for angular mode selection in lasers.
This method provides high selectivity by leveraging the physics of total internal reflection.
The demonstrated two-dimensional control opens possibilities for advanced laser beam shaping and applications.