Title:
MODULATION PATTERN CALCULATION DEVICE, LIGHT CONTROL DEVICE, MODULATION PATTERN CALCULATION METHOD, MODULATION PATTERN CALCULATION PROGRAM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2016/185979
Kind Code:
A1
Abstract:
Provided is a modulation pattern calculation device 20 in which an iterative Fourier transform unit 22a performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs substitution of a temporal intensity waveform function based on a desired waveform after the Fourier transform, and subsequently performs a reverse Fourier transform. The iterative Fourier transform unit 22a performs substitution using the result of multiplying a function representing a desired waveform by a coefficient. The value of the coefficient is such that the difference between the function after multiplication and the temporal intensity waveform function after the Fourier transform is smaller than prior to multiplication of the coefficient. As a result, it is possible to obtain a modulation pattern calculation device, a light control device, a modulation pattern calculation method, and a modulation pattern calculation program that minimize derivation from a local solution during iterative Fourier calculation and thereby make it possible to accurately calculate a phase spectrum or an intensity spectrum for bringing the temporal waveform of light closer to a desired waveform.
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Inventors:
WATANABE KOYO (JP)
INOUE TAKASHI (JP)
TAKAHASHI KOJI (JP)
INOUE TAKASHI (JP)
TAKAHASHI KOJI (JP)
Application Number:
PCT/JP2016/064041
Publication Date:
November 24, 2016
Filing Date:
May 11, 2016
Export Citation:
Assignee:
HAMAMATSU PHOTONICS KK (JP)
International Classes:
G02F1/01; G02F1/13; G02F1/133
Domestic Patent References:
| WO2014136784A1 | 2014-09-12 |
Foreign References:
| JP2013186350A | 2013-09-19 | |||
| US20110122467A1 | 2011-05-26 |
Other References:
MATSUMOTO,NAOYA ET AL.: "An adaptive approach for uniform scanning in multifocal multiphoton microscopy with a spatial light modulator", OPTICS EXPRESS, vol. 22, no. 1, 3 November 2014 (2014-11-03), pages 633 - 645, XP055330571
PASIENSKI,MATTHEW ET AL.: "A high-accuracy algorithm for designing arbitary holographic atom traps", OPTICS EXPRESS, vol. 16, no. 3, 4 February 2008 (2008-02-04), pages 2176 - 2190, XP055330572
M. HACKERG STOBRAWAT. FEURER: "Iterative Fourier transform algorithm for phase-only pulse shaping", OPTICS EXPRESS, vol. 9, no. 4, 13 August 2001 (2001-08-13), pages 191 - 199
OLIVIER RIPOLLVILLE KETTUNENHANS PETER HERZIG: "Review of iterative Fourier-transform algorithms for beam shaping applications", OPTICAL ENGINEERING, vol. 43, no. 11, November 2004 (2004-11-01), pages 2549 - 2556, XP007905133, DOI: 10.1117/1.1804543
PASIENSKI,MATTHEW ET AL.: "A high-accuracy algorithm for designing arbitary holographic atom traps", OPTICS EXPRESS, vol. 16, no. 3, 4 February 2008 (2008-02-04), pages 2176 - 2190, XP055330572
M. HACKERG STOBRAWAT. FEURER: "Iterative Fourier transform algorithm for phase-only pulse shaping", OPTICS EXPRESS, vol. 9, no. 4, 13 August 2001 (2001-08-13), pages 191 - 199
OLIVIER RIPOLLVILLE KETTUNENHANS PETER HERZIG: "Review of iterative Fourier-transform algorithms for beam shaping applications", OPTICAL ENGINEERING, vol. 43, no. 11, November 2004 (2004-11-01), pages 2549 - 2556, XP007905133, DOI: 10.1117/1.1804543
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
長谷川 芳樹 (JP)
長谷川 芳樹 (JP)
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