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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

Optical interferometers with reduced sensitivity to thermal noise.

H J Kimble¹, Benjamin L Lev, Jun Ye

¹JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA.

Physical Review Letters

|May 14, 2009

Summary

Reducing thermal noise in optical interferometers is crucial for enhanced sensitivity. This study presents novel schemes leveraging coherent properties to minimize thermally driven phase noise in mirror positions, improving measurement precision.

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Area of Science:

Physics
Optical Engineering
Metrology

Background:

Optical interferometry is limited by thermal noise, causing mirror surface fluctuations and phase noise.
This noise fundamentally limits the sensitivity of precision optical measurements.

Purpose of the Study:

To present schemes for reducing thermally driven phase noise in optical interferometers.
To explore methods for mitigating the impact of mirror surface fluctuations on measurement sensitivity.

Main Methods:

Investigating schemes that utilize the coherent nature of underlying displacements and strains.
Analyzing how optical phase upon reflection can be made less sensitive to physical surface motion.

Main Results:

Proposed schemes demonstrate potential for reduced sensitivity of optical phase to thermal surface motion.
Coherent compensation strategies offer a pathway to overcome fundamental sensitivity limits.

Conclusions:

Thermal noise remains a key challenge in optical interferometry.
Further research into coherent compensation schemes is needed for practical implementation and improved sensitivity.