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Related Experiment Video

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Intracavity adaptive optics. 3: Hsuria performance.

J M Spinhirne¹, D Anafi, R H Freeman

¹United Technologies Research Center, Optics & Applied Technology Laboratory, P.O. Drawer 4181, West Palm Beach, Florida 33402, USA.

|April 17, 2010

Summary

This summary is machine-generated.

Adaptive optics can improve resonator performance by correcting aberrations. However, secondary maxima lock-on in the multidither servo control limits full adaptive correction in half-symmetric unstable resonators with intracavity axicons.

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Area of Science:

Optical Engineering
Laser Physics
Adaptive Optics

Background:

Half-symmetric unstable resonators with intracavity axicons (HSURIA) are susceptible to aberrations.
Aberrations can arise from misfigure or misalignment of intracavity conical optics.

Purpose of the Study:

To investigate the efficacy of intracavity adaptive optics in improving HSURIA performance.
To identify limitations in adaptive correction for HSURIA systems.

Main Methods:

Experimental study using a deformable mirror for aberration correction.
Implementation of multidither servo control for adaptive correction.
Analysis of far-field performance and sensitivity to perturbations.

Main Results:

Near diffraction-limited far-field performance was achieved with adequate deformable mirror spatial frequency correction.
Secondary maxima lock-on by the multidither servo control significantly restricted adaptive correction.
HSURIA demonstrated extreme sensitivity to perturbations (as small as λ/140) near the optic axis.

Conclusions:

Intracavity adaptive optics can enhance HSURIA performance but face limitations.
Perturbation sensitivity is a primary cause of secondary maxima lock-on.
Precise deformable mirror figures are crucial for successful multidither servo control lock-on.