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

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Correction of parabolic errors in fabry-perot interferometers.

R P Netterfield, J V Ramsay

|February 6, 2010

Summary

This study presents a method to correct parabolic errors in Fabry-Perot interferometers. The technique significantly enhances precision, reducing errors from lambda/50 to less than lambda/400.

Area of Science:

Optical Physics
Interferometry

Background:

Fabry-Perot interferometers are crucial for high-resolution spectroscopy.
Parabolic errors can limit the precision of these instruments.

Purpose of the Study:

To develop and demonstrate a method for correcting parabolic errors in Fabry-Perot interferometers.
To improve the accuracy and performance of these optical devices.

Main Methods:

Utilizing evaporated films for optical coating.
Implementing an appropriate shutter mechanism for error correction.
Applying the method to reduce parabolic aberrations.

Main Results:

Successfully reduced significant parabolic errors (lambda/50) to a minimal level (less than lambda/400).

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Demonstrated effectiveness over substantial apertures (54-mm).

Achieved high precision at a wavelength of approximately 550 nm.

Conclusions:

The described method offers an effective solution for correcting parabolic errors in Fabry-Perot interferometers.
This technique enhances the precision and reliability of interferometric measurements.
Evaporated films and shutter systems provide a practical approach to improving optical instrument performance.