MEMS deformable mirrors: technology and applications

Gupta, Amita; Singh, Ramadhar; Chaudhary, Monika; Kumar, Shailesh Ranjan; Meena, Aklesh Kumar

doi:10.1117/12.925268

Cited by 2 publications

(2 citation statements)

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“…Then, influence function of every actuator are calculated out. If all the actuators are at (x 0 , y 0 ) at first, and the influence function is F 0 (x, y), the final influence function of ith actuator could be written as equation (5), where (x i , y i ) is the final position of the ith actuator.…”

Section: Step 4 Influence Function Calculationmentioning

confidence: 99%

“…A glass-mirror and piezoelectric-actuator DM (PZT DM) [4] is the most suitable one in high power laser as its high damage threshold and large stroke compared to MEMS DM [5,6], membrane DM [7,8] and bimorph/unimorph DM [9,10]. For a PZT DM, the number of actuators is an important factor that should be concerned to achieve better correction ability.…”

Section: Introductionmentioning

confidence: 99%

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Global actuator-distribution algorithm realized by a deformable mirror group for high precision aberration correction in laser optics system

Lei¹

2020

Laser Phys.

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A novel algorithm for high precision wavefront correction in adaptive optics is proposed in this paper. The process of the new global optimization distribution algorithm (GODA) is detailed described and compared with the existing stochastic parallel perturbation algorithm (SPPA). A deformable mirror (DM) group that could realize the algorithm is also introduced. It is made up of a number of single-actuator DMs. In the DM group, each actuator could have three dimensional movements-deformation in z direction and movements in x and y directions, making the equivalent actuator arrangement alterable. Simulations are carried out to verify the correction ability of the new algorithm realized by DM group. By comparing correction results of conventional DM, DM group with SPPA and GODA, the correction ability of DM group with GODA is proved to be better than SPPA and conventional DM.

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Section: Step 4 Influence Function Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Global actuator-distribution algorithm realized by a deformable mirror group for high precision aberration correction in laser optics system

Lei¹

2020

Laser Phys.

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Wavefront correction by a low-cost deformable mirror group in a small-aperture-beam fiber laser

Huang

Zhou

et al. 2017

Appl. Opt.

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A low-cost deformable mirror (DM) group for wavefront correction in a small-aperture-beam fiber laser is reported in this paper. The DM group consists of nine single-actuator DMs and could act as a "virtual" 9-actuator DM arranged in a 3×3 array. The equivalent distance between two adjacent actuators could reach as small as 3 mm, which can lead to a relatively high lateral resolution. Reflection mirrors in the DM group can be individually polished and high-damage-threshold coated. The unique manufacture flexibility will ensure the particularly low cost of the DM group. In this paper, a detailed configuration of the DM group and its application in small-aperture-beam fiber lasers are presented. Theoretic simulations and experimental results successfully demonstrate its capability in wavefront aberration correction for a small-aperture-beam fiber laser.

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MEMS deformable mirrors: technology and applications

Cited by 2 publications

References 0 publications

Global actuator-distribution algorithm realized by a deformable mirror group for high precision aberration correction in laser optics system

Global actuator-distribution algorithm realized by a deformable mirror group for high precision aberration correction in laser optics system

Wavefront correction by a low-cost deformable mirror group in a small-aperture-beam fiber laser

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