Hybrid approach used for extended image-based wavefront sensor-less adaptive optics

Dong, Bing; Yu, Ji

doi:10.3788/col201513.041101

Cited by 15 publications

(3 citation statements)

References 14 publications

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“…(2) . The iteration method is based on a stochastic parallel gradient descent (SPGD) algorithm [ 31 , 32 ]. During each iteration, small random perturbations are applied to the phase mask that causes a change of the metric value of

.…”

Section: Adaptive Optics For Spatially-varying Aberration Of Structur...mentioning

confidence: 99%

Tandem aberration correction optics (TACO) in wide-field structured illumination microscopy

Gong,

Scherer

2023

Biomed. Opt. Express

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Structured illumination microscopy (SIM) is a powerful super-resolution imaging technique that uses patterned illumination to down-modulate high spatial-frequency information of samples. However, the presence of spatially-dependent aberrations can severely disrupt the illumination pattern, limiting the quality of SIM imaging. Conventional adaptive optics (AO) techniques that employ wavefront correctors at the pupil plane are not capable of effectively correcting these spatially-dependent aberrations. We introduce the Tandem Aberration Correction Optics (TACO) approach that combines both pupil AO and conjugate AO for aberration correction in SIM. TACO incorporates a deformable mirror (DM) for pupil AO in the detection path to correct for global aberrations, while a spatial light modulator (SLM) is placed at the plane conjugate to the aberration source near the sample plane, termed conjugate AO, to compensate spatially-varying aberrations in the illumination path. Our numerical simulations and experimental results show that the TACO approach can recover the illumination pattern close to an ideal condition, even when severely misshaped by aberrations, resulting in high-quality super-resolution SIM reconstruction. The TACO approach resolves a critical traditional shortcoming of aberration correction for structured illumination. This advance significantly expands the application of SIM imaging in the study of complex, particularly biological, samples and should be effective in other wide-field microscopies.

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.…”

Section: Adaptive Optics For Spatially-varying Aberration Of Structur...mentioning

confidence: 99%

Tandem aberration correction optics (TACO) in wide-field structured illumination microscopy

Gong,

Scherer

2023

Biomed. Opt. Express

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“…和TR算法则无法保证收敛到全局极值. 在一些应用中可以将两种算法混合使用以兼顾收敛速度和全局最优 [10,11] . 利用Lukosz模式系数与远场光斑均方半径之间的关系, Booth [13] 进一步提出基于Lukosz模式的适用于大…”

Section: Sa和ga算法一般认为可以达到全局最优而Spgdunclassified

Application of wavefront sensorless adaptive optics in biological imaging

Dong¹,

Wu²,

Ren³

2017

Sci. Sin.-Phys. Mech. Astron.

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Obtaining high-quality images of organisms is critical to life sciences research, but imaging optical system and organism itself contain aberrations, leading to reduced resolution and contrast. Since aberrations introduced by different organisms are different and may change with time, they cannot be compensated by conventional optical design methods. Adaptive optics, originating in astronomical imaging observations, has the ability to overcome the effects of dynamic aberrations, and can therefore be used to improve imaging quality in biological imaging. Conventional adaptive optics typically has a wavefront sensor (such as Shack-Hartmann sensor) to measure wavefront errors. Recently developed wavefront sensorless adaptive optics (WSLAO) has got rid of dedicated wavefront sensors, so the system structure can be simplified and the cost is reduced. WSLAO can also overcome some limitations of traditional adaptive optics and has good application prospects. In this paper, the working principle of WSLAO is given at first. Then the applications of this technology in fundus imaging and fluorescence microscopy are discussed and the future development trend is proposed.

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“…2024, 14, 4692 2 of 14 these algorithms can yield nearly optimal correction outcomes. Hence, this technology is suitable for rectifying wavefront aberrations in free-space laser communication systems operating amidst strong turbulence conditions [3,4]. In a free-space optical communication system, when the selected signal wavelength has poor penetration or severe attenuation in the atmospheric channel, the system employs beacon light with a wavelength different from signal light, in conjunction with the Acquisition, Pointing, and Tracking (APT) system, to achieve capture, aiming, and tracking, thereby establishing the communication link [5,6].…”

Section: Introductionmentioning

confidence: 99%

Study on the Difference in Wavefront Distortion on Beams Caused by Wavelength Differences in the Strong Turbulence Region

Han,

Ke,

Liang

2024

Applied Sciences

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In free-space optical communication, the transmission of signal light and beacon light of differing wavelengths through the same atmospheric channel encounters variations in how the atmospheric refractive index absorbs and scatters light. This leads to distinct degrees of wavefront aberrations between the signal and beacon lights. In this study, we employed statistical optics to derive wavefront phase structure functions for both signal and beacon lights under conditions of strong turbulence. We explored how wavefront distortion varies among beams of different wavelengths after propagation through such turbulent conditions. Our findings revealed that as the turbulence outer scale escalates, the difference in wavefront distortion between signal and beacon lights stabilizes after an initial increase, assuming constant wavelengths. Furthermore, we observed significant changes in the relative wavefront aberrations when the inner scale of turbulence surpasses the separation between two points on the receiving apertures. As the disparity in wavelength decreases, so does the difference in wavefront aberrations. Finally, we propose a method for correcting wavefront aberrations based on coefficients of Zernike polynomials corresponding to beams with different wavelengths. This approach is validated through simulation and experimentation, demonstrating an 11% enhancement in the signal-to-optical Strehl ratio and a 0.072 increase in spot energy after the addition of correction coefficients compared with before their inclusion. These results solidify the efficacy of our method in improving adaptive optics correction accuracy.

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Hybrid approach used for extended image-based wavefront sensor-less adaptive optics

Cited by 15 publications

References 14 publications

Tandem aberration correction optics (TACO) in wide-field structured illumination microscopy

Tandem aberration correction optics (TACO) in wide-field structured illumination microscopy

Application of wavefront sensorless adaptive optics in biological imaging

Study on the Difference in Wavefront Distortion on Beams Caused by Wavelength Differences in the Strong Turbulence Region

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