Large field of view correction by using conjugate adaptive optics with multiple guide stars

Area of Science:

• Optical Microscopy
• Biomedical Imaging
• Adaptive Optics

Background:

• Adaptive optics (AO) is crucial for high-resolution imaging deep within biological samples.
• Limited corrected field of view (FOV) in conventional AO restricts imaging speed.
• Current AO methods struggle with imaging through scattering media like brain tissue.

Purpose of the Study:

• To develop a high-speed wavefront correction method to overcome FOV limitations in AO microscopy.
• To enhance the corrected FOV for faster imaging in scattering biological samples.
• To demonstrate the potential of AO for rapid deep-tissue imaging.

Main Methods:

• Utilized coherent optical adaptive technique (COAT).
• Implemented conjugate adaptive optical correction with multiple guide stars (CAOMG).
• Tested on 120-μm-thick mouse brain tissue.

Main Results:

• CAOMG significantly improved the corrected FOV compared to conventional pupil adaptive optics (PAO).
• Achieved up to a ~243-fold increase in corrected FOV in mouse brain tissue.
• Demonstrated high-speed imaging capability without additional time cost.

Conclusions:

• The CAOMG method offers a substantial improvement in corrected FOV for AO microscopy.
• This technique has significant potential for high-speed, deep-tissue imaging in biological sciences.
• Enables faster and more extensive visualization of biological structures within scattering media.