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Stable and flexible multiple spot pattern generation using LCOS spatial light modulator

delete2014-10-02
delete21
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OA
AI
N
Naoya Matsumoto *
H
Haruyasu Itoh
T
Takashi Inoue
T
Tomoko Otsu
H
Haruyoshi Toyoda
DOI:10.1364/OE.22.024722delete
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摘要

摘要

En 中文
The LCOS spatial light modulator (LCOS-SLM) can generate desired multiple spot patterns (MSPs) via the application of suitable computer-generated-holograms (CGHs), but the MSP intensity distribution varies because ambient temperature affects the phase modulation characteristic and causes wavefront distortion. To generate high-optical-quality MSPs we use our hardware-compensated (with a Peltier system to even out phase modulation) and software-corrected (via multiplication of the CGH by temperature correction coefficients) LCOS-SLMs. Experimental results with a 14x14 MSP generation show that the hardware-compensated LCOS-SLM provides stable MSPs between 9 to 32 degrees C. The software-corrected LCOS-SLM provides uniform spots over twice the temperature range obtained with conventional SLM method. We confirm that our methods are highly efficient for use in two-photon excitation microscopy application such as multifocal mulitphoton microscopy. (C) 2014 Optical Society of America
Keyword:
MULTIFOCAL MULTIPHOTON MICROSCOPY
CRYSTAL
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期刊

Optics Express 封面图
Optics Express
IF:
3.3
论文数:
6.1W
被引数:
14.3W

机构

H
hamamatsu photonics
学者数:
420
论文数: 374
被引数: 0
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