Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing

Rainer J Beck; Jonathan P. Parry; Jonathan D. Shephard; Duncan P. Hand

doi:10.1364/AO.50.002899

Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing

Rainer J Beck, Jonathan P. Parry, Jonathan D. Shephard, Duncan P. Hand

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Abstract

We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining. We show that active cooling of the display reduces the amplitude of these fluctuations, and we demonstrate a process synchronization technique developed to compensate for these fluctuations when applying the SLM to laser materials processing. For alternative SLM devices developed specifically for laser wavefront control (which do not exhibit such flickering problems), we show that our process synchronization approach is also beneficial to avoid machining glitches when switching quickly between different phase profiles (and hence beam patterns). (C) 2011 Optical Society of America

Original language	English
Pages (from-to)	2899-2905
Number of pages	7
Journal	Applied Optics
Volume	50
Issue number	18
DOIs	https://doi.org/10.1364/AO.50.002899
Publication status	Published - 20 Jun 2011

Keywords

HOLOGRAPHIC OPTICAL TWEEZERS
SPATIAL LIGHT-MODULATOR
DESIGN

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title = "Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing",

abstract = "We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining. We show that active cooling of the display reduces the amplitude of these fluctuations, and we demonstrate a process synchronization technique developed to compensate for these fluctuations when applying the SLM to laser materials processing. For alternative SLM devices developed specifically for laser wavefront control (which do not exhibit such flickering problems), we show that our process synchronization approach is also beneficial to avoid machining glitches when switching quickly between different phase profiles (and hence beam patterns). (C) 2011 Optical Society of America",

keywords = "HOLOGRAPHIC OPTICAL TWEEZERS, SPATIAL LIGHT-MODULATOR, DESIGN",

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T1 - Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing

AU - Beck, Rainer J

AU - Parry, Jonathan P.

AU - Shephard, Jonathan D.

AU - Hand, Duncan P.

PY - 2011/6/20

Y1 - 2011/6/20

N2 - We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining. We show that active cooling of the display reduces the amplitude of these fluctuations, and we demonstrate a process synchronization technique developed to compensate for these fluctuations when applying the SLM to laser materials processing. For alternative SLM devices developed specifically for laser wavefront control (which do not exhibit such flickering problems), we show that our process synchronization approach is also beneficial to avoid machining glitches when switching quickly between different phase profiles (and hence beam patterns). (C) 2011 Optical Society of America

AB - We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining. We show that active cooling of the display reduces the amplitude of these fluctuations, and we demonstrate a process synchronization technique developed to compensate for these fluctuations when applying the SLM to laser materials processing. For alternative SLM devices developed specifically for laser wavefront control (which do not exhibit such flickering problems), we show that our process synchronization approach is also beneficial to avoid machining glitches when switching quickly between different phase profiles (and hence beam patterns). (C) 2011 Optical Society of America

KW - HOLOGRAPHIC OPTICAL TWEEZERS

KW - SPATIAL LIGHT-MODULATOR

KW - DESIGN

U2 - 10.1364/AO.50.002899

DO - 10.1364/AO.50.002899

M3 - Article

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SN - 1559-128X

VL - 50

SP - 2899

EP - 2905

JO - Applied Optics

JF - Applied Optics

IS - 18

ER -

Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing

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Keywords

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