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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Practical Considerations on the Multi-layer Mirrors for Superluminal Ring Laser Gyroscopes.

Zhiguo Wang¹, Baolun Yuan²

¹1] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [2] Interdisciplinary Center of Quantum Information, National University of Defense Technology, Changsha 410073, China [3] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.

Scientific Reports

|July 10, 2015

Summary

Achieving superluminal ring laser gyroscopes is hindered by coating material absorption. Practical devices require extremely low extinction coefficients, posing a significant current challenge for high-dispersion mirrors.

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Area of Science:

Optics and Photonics
Laser Technology
Materials Science

Background:

Ring laser gyroscopes are crucial for inertial navigation.
Superluminal operation offers potential performance enhancements.
Coating material absorption in optical components can limit device performance.

Purpose of the Study:

To model the impact of coating material absorption on superluminal ring laser gyroscopes.
To identify critical parameters for enabling practical superluminal operation.
To assess the feasibility of current technologies in meeting these requirements.

Main Methods:

Development of a simplified analytical model.
Analysis of scale factor enhancement limitations.
Investigation of the role of mirror dispersion and absorption.

Main Results:

Absorption in high-dispersion mirrors significantly restricts scale factor enhancement in a 15 cm cavity ring laser gyroscope.
The model indicates that practical superluminal ring laser gyroscopes necessitate an extinction coefficient below 1E-10 for coating materials.

Conclusions:

Current coating materials present a substantial obstacle to realizing practical superluminal ring laser gyroscopes.
Further advancements in low-absorption optical coatings are essential for future developments in this field.