Recursive wavefront aberration correction method for LCoS spatial light modulators

García-Márquez, Jorge; Landgrave, J. E. A.; Alcalá-Ochoa, Noé; Pérez-Santos, Carlos

doi:10.1016/j.optlaseng.2011.01.024

Cited by 23 publications

(15 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Next, we want to analyze their validity in case there are instabilities or fluctuations in the linear retardance, as it is the case in digitally addressed LCoS devices [12]- [14] . As a first approximation we may consider a triangular profile for the periodic variation of retardance with time ( ) t Γ , as shown in Fig.…”

Section: Theoretical Developmentmentioning

confidence: 99%

“…Different measurement methods have been proposed and demonstrated to characterize the phase-shift versus voltage in LCoS devices [12]- [14] . Some of these methods provide full polarimetric characterization and are based on Stokes-Mueller polarimeters [12] [13] .…”

Section: Introductionmentioning

confidence: 99%

“…In ref. [14] it was demonstrated that the addition of a high speed CCD camera and a Twyman-Green interferometer allows obtaining the instantaneous phase-shift modulation across the surface of an LCoS.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Classical polarimetric method revisited to analyse the modulation capabilities of parallel aligned liquid crystal on silicon displays

et al. 2012

View full text Add to dashboard Cite

Novel liquid crystal on silicon displays (LCoS) technology has found widespread use in a number of applications dealing with the spatial modulation of the properties of a light wavefront. Parallel aligned LCoS (PA-LCoS) are especially interesting since they provide phase-only modulation with no coupling of amplitude modulation. However, typically LCoS are digitally addressed and this has been proven as a drawback since it causes fluctuations in the phase modulation. In this work we concentrate on PA-LCoS. We analyse the application of a classical polarimetric method for retardance measurement, which makes use of only linearly polarized light, typically used in wave plates. We analyse the effect of phase fluctuations on the measurements and provide a refinement of the method which allows estimating both the average retardance and the magnitude of the phase fluctuation. We demonstrate both theoretically and experimental that this extension of a classical method is both simple and very well suited for the measurement of the modulation properties of novel PA-LCoS.

show abstract

Section: Theoretical Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Classical polarimetric method revisited to analyse the modulation capabilities of parallel aligned liquid crystal on silicon displays

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Recently, due to the cost reduction of these devices, wavefront correction systems have widened their application to other research areas such as microscopy [2], ophthalmology [3], optical communication [4,5] and even lithography steppers [6,7]. One of the reasons of the cost reduction is the development of new tools that are able to modify the wavefront of an optical wave, such as electrostatic membrane mirror [8], bimorph piezoelectric mirror [9] and spatial light modulator (SLM) [10,11]. In AO systems, the most used wavefront correction device is still a deformable mirror (DM).…”

Section: Introductionmentioning

confidence: 99%

An innovative and efficient method to control the shape of push-pull membrane deformable mirror

Polo¹,

Haber²,

Pereira³

et al. 2012

Opt. Express

View full text Add to dashboard Cite

Abstract:We carry out performance characterisation of a commercial push and pull deformable mirror with 48 actuators (Adaptica Srl). We present a detailed description of the system as well as a statistical approach on the identification of the mirror influence function. A new efficient control algorithm to induce the desired wavefront shape is also developed and comparison with other control algorithms present in literature has been made to prove the efficiency of the new approach. , 1999). 25. G. Brusa-Zappellini, A. Riccardi, V. Biliotti, C. Del Vecchio, P. Salinari, P. Stefanini, P. Mantegazza, R. Biasi, M. Andrighettoni, C. Franchini, and D. Gallieni, "Adaptive secondary mirror for the 6.5-m conversion of the multiple mirror telescope: first laboratory testing results," Proc. SPIE 3726, 38-49 (1999).

show abstract

“…In optical traps, poor focal spot characteristics lead to smaller trap stiffness and distorted force field [27,28]. Wavefront distortion determination methods may apply wavefront sensors [29]- [31], interferometry [24] or monitor focal spot distribution [26,28]; the correction may apply Zernike polynomials [26,28,31], perform the correction in domains of the SLM [32,33] or apply a LaguerreGauss beam to optimize the wavefront [25]. The correction can even be performed for large area SLMs [34].…”

Section: Introductionmentioning

confidence: 99%

Two-photon polymerization with optimized spatial light modulator

Kelemen¹,

Ormos²,

Vizsnyiczai³

2011

J. Eur. Opt. Soc.-Rapid Publ.

View full text Add to dashboard Cite

The application of diffractive optical elements can enhance the efficiency of the two-photon polymerization (TPP) process by multiplying the polymerizing beams. Spatial light modulators (SLMs) can dynamically change the light intensity pattern used for polymerization, making single shot polymerization possible. Most reflective, liquid crystal-based instruments, however, suffer from various surface aberrations. In order to enable SLMs to generate suitable polymerizing beams for TPP, these aberrations need to be corrected. Several methods were introduced earlier to compensate SLM aberrations in different applications. For the nonlinear process of TPP, we developed and specifically characterized a correction procedure. We used a simple interferometric method to determine the surface distortion of the SLM, calculated a correcting hologram and confirmed the correction with the polymerization of test structures. The corrected SLM was capable of parallel polymerization of 3D structures with a quality achievable with non-SLM beams.

show abstract

Recursive wavefront aberration correction method for LCoS spatial light modulators

Cited by 23 publications

References 11 publications

Classical polarimetric method revisited to analyse the modulation capabilities of parallel aligned liquid crystal on silicon displays

Classical polarimetric method revisited to analyse the modulation capabilities of parallel aligned liquid crystal on silicon displays

An innovative and efficient method to control the shape of push-pull membrane deformable mirror

Two-photon polymerization with optimized spatial light modulator

Contact Info

Product

Resources

About