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

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

Published on: August 12, 2013

Conical refraction Nd:KGd(WO4)2 laser.

Amin Abdolvand¹, Keith G Wilcox, Todor K Kalkandjiev

¹School of Engineering, Physics and Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom. a.abdolvand@dundee.ac.uk

|February 23, 2010

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Cascade conical refraction in a two-crystal laser configuration demonstrates ultra-efficient, multi-watt output with excellent beam quality. This novel approach offers a new path for scaling power and brightness in solid-state bulk lasers.

Area of Science:

Optics and Photonics
Solid-State Laser Technology
Crystallography

Background:

Conical refraction, predicted by Hamilton in 1832, describes light emerging as a hollow cone when propagating along the optic axis of biaxial crystals.
Cascade conical refraction using multiple crystals remains an underexplored area in optics.

Purpose of the Study:

To empirically investigate a novel two-crystal configuration for cascade conical refraction.
To demonstrate an ultra-efficient solid-state bulk laser utilizing this configuration.

Main Methods:

Experimental investigation of a unique two-crystal setup.
Development of a Nd:KGd(WO(4))(2) laser incorporating the cascade conical refraction configuration.
Analysis of output power, beam quality, and slope efficiency.

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Last Updated: Jun 16, 2026

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Published on: August 12, 2013

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Main Results:

Demonstration of an ultra-efficient conical refraction laser.
Achieved multi-watt output power with excellent beam quality.
Observed slope efficiency close to the theoretical maximum, independent of resonator design.

Conclusions:

The two-crystal cascade conical refraction configuration enables highly efficient laser operation.
This method provides a promising route for power and brightness scaling in solid-state bulk lasers.
The resonator design independence highlights the robustness of the conical refraction effect for laser optimization.