&lt;title&gt;Application Of The Liquid Crystal Light Valve To Real-Time Optical Data Processing&lt;/title&gt;

Bleha, W. P.; Lipton, Lenny; Wiener‐Avnear, E.; Grinberg, J.; Reif, P. G.; Casasent, David; Brown, Hugh B.; Markevitch, Bob V.

doi:10.1117/12.7972245

Cited by 164 publications

(23 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We note, however, that this same specification is within the capability of alternative SLM devices of greater sensitivity, e.g. photoconductive liquid crystal light valves [13]. The quantum nature of the photochromic process rules out any large-scale improvement in the intrinsic material sensitivity; the bleaching quantum efficiency can only be improved by a factor ^5 in the ultimate limit, and, in present materials, with extinction coefficients ~ 10 4 , the absorption is already extremely high.…”

Section: Discussionmentioning

confidence: 96%

Organic photochromies for spatial light modulation

Kirkby

Bennion

1986

IEE Proc. J Optoelectron. UK

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 96%

Organic photochromies for spatial light modulation

Kirkby

Bennion

1986

IEE Proc. J Optoelectron. UK

View full text Add to dashboard Cite

show abstract

“…The project thus adopted transmissive Optically Addressable Light Valve (OALV) technology. 3,4 This method leverages incoherent, pixelated display technology to define incoherent images on an auxiliary beam, but eliminates many artifacts associated with modulating coherent beams through use of a custom, single-pixel anti-reflection coated LC modulator. The design of the device and its detailed operation were described in a previous conference proceedings but are again reviewed here.…”

Section: Introductionmentioning

confidence: 99%

Programmable beam spatial shaping system for the National Ignition Facility

et al. 2011

View full text Add to dashboard Cite

A system of customized spatial light modulators has been installed onto the front end of the laser system at the National Ignition Facility (NIF). The devices are capable of shaping the beam profile at a low-fluence relay plane upstream of the amplifier chain. Their primary function is to introduce "blocker" obscurations at programmed locations within the beam profile. These obscurations are positioned to shadow small, isolated flaws on downstream optical components that might otherwise limit the system operating energy. The modulators were designed to enable a drop-in retrofit of each of the 48 existing Pre Amplifier Modules (PAMs) without compromising their original performance specifications. This was accomplished by use of transmissive Optically Addressable Light Valves (OALV) based on a Bismuth Silicon Oxide photoconductive layer in series with a twisted nematic liquid crystal (LC) layer. These Programmable Spatial Shaper packages in combination with a flaw inspection system and optic registration strategy have provided a robust approach for extending the operational lifetime of high fluence laser optics on NIF.

show abstract

Section: Introductionmentioning

confidence: 99%

A programmable beam shaping system for tailoring the profile of high fluence laser beams

et al. 2010

View full text Add to dashboard Cite

Customized spatial light modulators have been designed and fabricated for use as precision beam shaping devices in fusion class laser systems. By inserting this device in a low-fluence relay plane upstream of the amplifier chain, "blocker" obscurations can be programmed into the beam profile to shadow small isolated flaws on downstream optical components that might otherwise limit the system operating energy. In this two stage system, 1920 × 1080 bitmap images are first imprinted on incoherent, 470 nm address beams via pixilated liquid crystal on silicon (LCoS) modulators. To realize defined masking functions with smooth apodized shapes and no pixelization artifacts, address beam images are projected onto custom fabricated optically-addressable light valves. Each valve consists of a large, single pixel liquid cell in series with a photoconductive Bismuth silicon Oxide (BSO) crystal. The BSO crystal enables bright and dark regions of the address image to locally control the voltage supplied to the liquid crystal layer which in turn modulates the amplitude of the coherent beams at 1053 nm. Valves as large as 24 mm x 36 mm have been fabricated with low wavefront distortion (<0.5 waves) and antireflection coatings for high transmission (>90%) and etalon suppression to avoid spectral and temporal ripple. This device in combination with a flaw inspection system and optic registration strategy represents a new approach for extending the operational lifetime of high fluence laser optics.

show abstract

<title>Application Of The Liquid Crystal Light Valve To Real-Time Optical Data Processing</title>

Cited by 164 publications

References 0 publications

Organic photochromies for spatial light modulation

Organic photochromies for spatial light modulation

Programmable beam spatial shaping system for the National Ignition Facility

A programmable beam shaping system for tailoring the profile of high fluence laser beams

Contact Info

Product

Resources

About