Dr. Takayo Ogawa Profile

Dr. Takayo Ogawa

at RIKEN

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Author

Publications (7)

Proceedings Article | 12 July 2023 Open Access

Study of laser ablation induced impulse for laser space debris removal

Katsuhiko Tsuno, Satoshi Wada, Takayo Ogawa, Norihito Saito, Tadanori Fukushima, Toshikazu Ebisuzaki, Yusuke Nakamura, Akihiro Sasoh

Proceedings Volume 12777, 1277762 (2023) https://doi.org/10.1117/12.2691109

KEYWORDS: Laser ablation, Second harmonic generation, Satellites, Laser irradiation, Plasma, Nd:YAG lasers, Pulsed laser operation, Pendulums, Astronomical imaging, Vacuum

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Even a low failure rate means that dozens of satellites could lose control and become debris. Because they are located in an operational orbit, they pose a serious problem. Therefore, a few active debris removal (ADR) ideas have been proposed, which is to tow and de-orbit debris satellites with rescue satellites similar to tugboats for shipwrecks. In these cases, physical contact, such as towing by wire, is a prerequisite. Mechanical coupling between satellites involves risks such as the collision between satellites and loss of attitude control at the time of coupling. Since no cooperation between the two satellites is not desirable, mechanical contact is very difficult when the debris has high angular momentum. On the other hand, the contactless debris removing idea, to irradiate debris satellites with lasers and use of the laser ablation induced impulse, has been proposed. In this approach ti, is important to accumulate data on how much impulse is generated by the plasma plume produced by laser ablation in a vacuum. A compact and efficient measurement device to measure this impulse has been developed. In this study, we investigated impulses generated by a 10ns Q-switched Nd:YAG laser (1064nm) and its second harmonic generation (SHG, 532nm) using a metal as a target for laser irradiation. The results show that the fundamental (1064nm) laser of about 100W can generate enough thrust to deorbit space debris with comparable mass to a small satellite from 1000km to 500km altitude in a year. SHG can be converted to impulse more efficiently than 1064nm. The use of 532nm alone, including the SHG generation efficiency, has less impact on the impulse generation effect than the use of 1064nm fundamental alone, without SHG. It was pointed out that the energy of the Nd:YAG laser effectively uses generation of impulse when the remaining fundamental components that could not be converted to SHG could be used to irradiate to generate ablation. Although the use of SHG is not effective in terms of 1064nm fundamental power including SHG generation efficiency, it is demonstrated that the energy of the Nd:YAG laser can be efficiently utilized by using the remaining fundamental components that could not be converted to SHG.

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Proceedings Article | 12 July 2019 Open Access

UFSS (ultra fine sun sensor): CCD sun sensor with sub-arc second accuracy for the next solar observing satellite SOLAR-C

K. Tsuno, S. Wada, T. Ogawa, T. Shimizu, T. Hasegawa, M. Kubo, H. Murao, S. Mizumoto, S. Fujishima, K. Toyonaga

Proceedings Volume 11180, 111804O (2019) https://doi.org/10.1117/12.2536087

KEYWORDS: Sensors, Charge-coupled devices, Sun, CCD image sensors, Reticles, Satellites, Spatial resolution, Earth observing sensors, Electronics, Clocks

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Proceedings Article | 28 February 2014 Paper

Development of Nd,Cr co-doped laser materials for solar-pumped lasers

Takayo Ogawa, Satoshi Wada, Mikio Higuchi

Proceedings Volume 8959, 89591J (2014) https://doi.org/10.1117/12.2041649

KEYWORDS: Crystals, Laser crystals, Absorption, Luminescence, Chromium, Solar energy, Neodymium, Laser applications, Ultraviolet radiation, Laser energy

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Proceedings Article | 19 November 2012 Paper

Three-year program to improve critical 1-micron Qsw laser technology for Earth observation

Daisuke Sakaizawa, Yoshikazu Chishiki, Yohei Satoh, Tatsuyuki Hanada, Shiro Yamakawa, Takayo Ogawa, Satoshi Wada, Shoken Ishii, Kohei Mizutani, Motoaki Yasui

Proceedings Volume 8526, 85260V (2012) https://doi.org/10.1117/12.979665

KEYWORDS: Laser applications, LIDAR, Semiconductor lasers, Diodes, Transmitters, Space operations, Contamination, Reliability, Space telescopes, Thermography

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Proceedings Article | 19 November 2012 Paper

Remote sensing for physical geography from ISS by JEM-EUSO

Takayuki Tomida, Takayo Ogawa, Satoshi Wada, M. Rodriguez Frias, Andrii Neronov

Proceedings Volume 8526, 85260H (2012) https://doi.org/10.1117/12.977301

KEYWORDS: Clouds, Infrared cameras, LIDAR, Space telescopes, Telescopes, Earth's atmosphere, Atmospheric particles, Calibration, Cameras, Atmospheric monitoring

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Proceedings Article | 22 February 2011 Paper

Development of a mid-infrared tunable optical parametric oscillator pumped by a Q-switched Tm,Ho:YAG laser

Hisanao Hazama, Masaki Yumoto, Takayo Ogawa, Satoshi Wada, Kunio Awazu

Proceedings Volume 7917, 79170N (2011) https://doi.org/10.1117/12.875935

KEYWORDS: Optical parametric oscillators, Crystals, Tunable lasers, Silver selenogallate, Q switched lasers, Semiconductor lasers, Pulsed laser operation, Ceramics, Mid-IR, Phase matching

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Proceedings Article | 24 February 2009 Paper

Mid-infrared tunable optical parametric oscillator pumped by a Q-switched Tm,Ho:YAG ceramic laser

Hisanao Hazama, Masaki Yumoto, Takayo Ogawa, Satoshi Wada, Kunio Awazu

Proceedings Volume 7197, 71970J (2009) https://doi.org/10.1117/12.809832

KEYWORDS: Optical parametric oscillators, Ceramics, Tunable lasers, Q switched lasers, Semiconductor lasers, Crystals, Mid-IR, Absorption, Laser stabilization, Pulsed laser operation

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Showing 5 of 7 publications

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