Dr. Matthew C. Dinkins Profile

Dr. Matthew C. Dinkins

Software Engineer at Subaru Telescope NAOJ

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Publications (13)

Proceedings Article | 15 July 2008 Paper

Implementation of 188-element curvature-based wavefront sensor and calibration source unit for the Subaru LGSAO system

Makoto Watanabe, Shin Oya, Yutaka Hayano, Hideki Takami, Masayuki Hattori, Yosuke Minowa, Yoshihiko Saito, Meguru Ito, Naoshi Murakami, Masanori Iye, Olivier Guyon, Stephen Colley, Michael Eldred, Taras Golota, Matthew Dinkins

Proc. SPIE. 7015, Adaptive Optics Systems

KEYWORDS: Optical fibers, Telescopes, Mirrors, Avalanche photodetectors, Stars, Cameras, Calibration, Wavefront sensors, Adaptive optics, Laser guide stars

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Proceedings Article | 15 July 2008 Paper

Development of a dichroic beam splitter for Subaru AO188

Yosuke Minowa, Hideki Takami, Makoto Watanabe, Yutaka Hayano, Masaaki Miyake, Masanori Iye, Shin Oya, Masayuki Hattori, Naoshi Murakami, Olivier Guyon, Yoshihiko Saito, Meguru Itoh, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proc. SPIE. 7015, Adaptive Optics Systems

KEYWORDS: Near infrared, Telescopes, Beam splitters, Optical coatings, Adaptive optics, Humidity, Transmittance, Thin film coatings, Thorium, Absorption

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Proceedings Article | 14 July 2008 Paper

Characterization of vibrating shape of a bimorph deformable mirror

Shin Oya, Yosuke Minowa, Masayuki Hattori, Makoto Watanabe, Yutaka Hayano, Megru Itoh, Yoshihiko Saito, Hideki Takami, Masanori Iye, Olivier Guyon, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proc. SPIE. 7015, Adaptive Optics Systems

KEYWORDS: Telescopes, Mirrors, Spectrum analysis, Optical amplifiers, Sensors, Adaptive optics, Control systems, Deformable mirrors, Finite element methods, Shape analysis

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Proceedings Article | 14 July 2008 Paper

Instrument control tool kit for the Subaru Telescope laser guide star adaptive optics system

Matthew Dinkins

Proc. SPIE. 7019, Advanced Software and Control for Astronomy II

KEYWORDS: Telescopes, Astronomy, Interfaces, Fourier transforms, Adaptive optics, Control systems, Software development, Associative arrays, Laser guide stars, Computer architecture

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Proceedings Article | 11 July 2008 Paper

Timing characterization and analysis of the Linux-based, closed loop control computer for the Subaru Telescope laser guide star adaptive optics system

Matthew Dinkins, Stephen Colley

Proc. SPIE. 7015, Adaptive Optics Systems

KEYWORDS: Telescopes, Adaptive optics, Control systems, Laser guide stars, Operating systems, Surface conduction electron emitter displays

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Proceedings Article | 10 July 2008 Paper

Current status of the laser guide star adaptive optic system for Subaru Telescope

Yutaka Hayano, Hideki Takami, Olivier Guyon, Shin Oya, Masayuki Hattori, Yoshihiko Saito, Makoto Watanabe, Naoshi Murakami, Yosuke Minowa, Meguru Ito, Stephen Colley, Michael Eldred, Taras Golota, Matthew Dinkins, Nobunari Kashikawa, Masanori Iye

Proc. SPIE. 7015, Adaptive Optics Systems

KEYWORDS: Optical fibers, Point spread functions, Telescopes, Stars, Waveguides, Adaptive optics, Sodium, Laser guide stars, Gold vapor lasers, K band

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Proceedings Article | 28 June 2006 Paper

The laser guide star facility for Subaru Telescope

Yutaka Hayano, Yoshihiko Saito, Meguru Ito, Norihito Saito, Mayumi Kato, Kazuyuki Akagawa, Akira Takazawa, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe, Hideki Takami, Satoshi Wada, Masanori Iye

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Telescopes, Astronomy, Photonic crystal fibers, Diagnostics, Adaptive optics, Fiber lasers, Space telescopes, Relays, Laser guide stars, Laser systems engineering

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Proceedings Article | 28 June 2006 Paper

Performance of the deformable mirror for Subaru LGSAO

Shin Oya, Aurelien Bouvier, Olivier Guyon, Makoto Watanabe, Yutaka Hayano, Hideki Takami, Masanori Iye, Masayuki Hattori, Yoshihiko Saito, Meguru Itoh, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Telescopes, Mirrors, Ferroelectric materials, Data modeling, Electrodes, Glasses, Adaptive optics, Deformable mirrors, Finite element methods, Laser optics

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Proceedings Article | 28 June 2006 Paper

589 nm sum-frequency generation laser for the LGS/AO of Subaru Telescope

Yoshihiko Saito, Yutaka Hayano, Norihito Saito, Kazuyuki Akagawa, Akira Takazawa, Mayumi Kato, Meguru Ito, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe, Hideki Takami, Masanori Iye, Satoshi Wada

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Telescopes, Oscillators, Mode locking, Laser development, Nd:YAG lasers, Fiber lasers, Sodium, Laser guide stars, Nonlinear crystals, Laser systems engineering

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Proceedings Article | 28 June 2006 Paper

Transmission characteristics of high-power 589-nm laser beam in photonic crystal fiber

Meguru Ito, Yutaka Hayano, Norihito Saito, Kazuyuki Akagawa, Mayumi Kato, Yoshihiko Saito, Akira Takazawa, Hideki Takami, Masanori Iye, Satoshi Wada, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Optical fibers, Telescopes, Polarization, Scattering, Light scattering, Laser scattering, Fiber lasers, Relays, Raman scattering, Sodium

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We are developing Laser Guide Star Adaptive Optics (LGSAO) system for Subaru Telescope at Hawaii, Mauna Kea. We achieved an all-solid-state 589.159 nm laser in sum-frequency generation. Output power at 589.159 nm reached 4W in quasi-continuous-wave operation. To relay the laser beam from laser location to laser launching telescope, we used an optical fiber because the optical fiber relay is more flexible and easier than mirror train. However, nonlinear scattering effect, especially stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS), will happen when the inputted laser power increases, i.e., intensity at the fiber core exceed each threshold. In order to raise the threshold levels of each nonlinear scattering, we adopt photonic crystal fiber (PCF). Because the PCF can be made larger core than usual step index fiber (SIF), one can reduce the intensity in the core. We inputted the high power laser into the PCF whose mode field diameter (MFD) is 14 μm and the SIF whose MFD is 5 μm, and measured the transmission characteristics of them. In the case of the SIF, the SRS was happen when we inputted 2 W. On the other hand, the SRS and the SBS were not induced in the PCF even for an input power of 4 W. We also investigated polarization of the laser beam transmitting through the PCF. Because of the fact that the backscattering efficiency of exciting the sodium layer with a narrowband laser is dependent on the polarization state of the incident beam, we tried to control the polarization of the laser beam transmitted the PCF. We constructed the system which can control the polarization of input laser and measure the output polarization. The PCF showed to be able to assume as a double refraction optical device, and we found that the output polarization is controllable by injecting beam with appropriate polarization through the PCF. However, the Laser Guide Star made by the beam passed through the PCF had same brightness as the state of the polarization.

Proceedings Article | 27 June 2006 Paper

Implementation of modal optimization system of Subaru-188 adaptive optics

Masayuki Hattori, Taras Golota, Guyon Olivier, Matthew Dinkins, Shin Oya, Stephen Colley, Michael Eldred, Makoto Watanabe, Meguru Itoh, Yoshihiko Saito, Yutaka Hayano, Hideki Takami, Masanori Iye

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Telescopes, Mirrors, Stars, Error analysis, Wavefront sensors, Wavefronts, Adaptive optics, Control systems, Servomechanisms, Optimization (mathematics)

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Proceedings Article | 27 June 2006 Paper

Status of Subaru laser guide star AO system

Hideki Takami, Stephen Colley, Matt Dinkins, Michael Eldred, Olivier Guyon, Taras Golota, Masayuki Hattori, Yutaka Hayano, Meguru Ito, Masanori Iye, Shin Oya, Yoshihiko Saito, Makoto Watanabe

Proc. SPIE. 6272, Advances in Adaptive Optics II

KEYWORDS: Telescopes, Mirrors, Avalanche photodetectors, Stars, Sensors, Wavefront sensors, Adaptive optics, Fiber lasers, Laser guide stars, Laser systems engineering

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Proceedings Article | 25 October 2004 Paper

Design of laser system for Subaru LGS AO

Yutaka Hayano, Yoshihiko Saito, Norihito Saito, Kazuyuki Akagawa, Yukiko Kamata, Tomio Kanzawa, Tomio Kurakami, Naruhisa Takato, Stephen Colley, Michael Eldred, Thomas Kane, Olivier Guyon, Shin Oya, Makoto Watanabe, Masayuki Hattori, Taras Golota, Matthew Dinkins, Naoto Kobayashi, Yosuke Minowa, Miwa Goto, Nobuo Arimoto, Satoshi Wada, Hideki Takami, Masanori Iye

Proc. SPIE. 5490, Advancements in Adaptive Optics

KEYWORDS: Telescopes, Mode locking, Laser development, Adaptive optics, Fiber lasers, Relays, Laser guide stars, Laser optics, Optics manufacturing, Laser systems engineering

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Showing 5 of 13 publications

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