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High-order Mode Laguerre-Gaussian Beam Transformation Using a 127-actuator Deformable Mirror: Numerical Simulations
Author(s): Dong, L (Dong, L.); Yang, P (Yang, P.); Xu, B (Xu, B.); Lei, X (Lei, X.); Ning, Y (Ning, Y.); Liu, W (Liu, W.); Yan, H (Yan, H.)
Source: APPLIED PHYSICS B-LASERS AND OPTICS Volume: 104 Issue: 3 Special Issue: SI Pages: 725-733 DOI: 10.1007/s00340-011-4458-7 Published: SEP 2011
Abstract: Transforming high-order mode Laguerre-Gaussian beams in the far-field using a 127-actuator deformable mirror controlled by a stochastic parallel gradient descent algorithm is presented. As a phase shift of half wave exists between every neighboring lobes of high-order mode Laguerre-Gaussian beams, there are multiple lobes in the far-field. The suitable beam radius related to the aperture size of the deformable mirror is discussed. Three system performance metrics are evaluated, and encircled energy is preferred. Simulation results show that it is possible to compensate for the phase shifts and other phase aberrations of a high-order mode Laguerre-Gaussian beam and achieve a single bright lobe with this approach. Transforming the far-field intensity distribution of high-order mode Laguerre-Gaussian beams into Gaussian and super Gaussian distributions are also investigated.
Addresses: [Dong, L; Yang, P; Xu, B; Lei, X; Ning, Y; Liu, W; Yan, H] Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
[Dong, L; Yang, P; Xu, B; Lei, X; Ning, Y; Liu, W; Yan, H] Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
[Dong, L; Lei, X; Liu, W; Yan, H] Chinese Acad Sci, Grad Sch, Beijing 100084, Peoples R China
Reprint Address: Dong, L (reprint author), Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
E-mail Address: lizhi_dong@hotmail.com
IDS Number: 814YQ
Source: APPLIED PHYSICS B-LASERS AND OPTICS Volume: 104 Issue: 3 Special Issue: SI Pages: 725-733 DOI: 10.1007/s00340-011-4458-7 Published: SEP 2011
Abstract: Transforming high-order mode Laguerre-Gaussian beams in the far-field using a 127-actuator deformable mirror controlled by a stochastic parallel gradient descent algorithm is presented. As a phase shift of half wave exists between every neighboring lobes of high-order mode Laguerre-Gaussian beams, there are multiple lobes in the far-field. The suitable beam radius related to the aperture size of the deformable mirror is discussed. Three system performance metrics are evaluated, and encircled energy is preferred. Simulation results show that it is possible to compensate for the phase shifts and other phase aberrations of a high-order mode Laguerre-Gaussian beam and achieve a single bright lobe with this approach. Transforming the far-field intensity distribution of high-order mode Laguerre-Gaussian beams into Gaussian and super Gaussian distributions are also investigated.
Addresses: [Dong, L; Yang, P; Xu, B; Lei, X; Ning, Y; Liu, W; Yan, H] Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
[Dong, L; Yang, P; Xu, B; Lei, X; Ning, Y; Liu, W; Yan, H] Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
[Dong, L; Lei, X; Liu, W; Yan, H] Chinese Acad Sci, Grad Sch, Beijing 100084, Peoples R China
Reprint Address: Dong, L (reprint author), Chinese Acad Sci, Lab Adapt Opt, Inst Opt & Elect, Chengdu 610209, Peoples R China
E-mail Address: lizhi_dong@hotmail.com
IDS Number: 814YQ
