Kiyotaka Miura

Temperature distribution and modification mechanism inside glass with heat accumulation during 250 kHz irradiation of femtosecond laser pulses (2008)

Sakakura, Masaaki, Shimizu, Masahiro, Shimotsuma, Yasuhiko, Miura, Kiyotaka, Hirao, Kazuyuki

Heat accumulation by high repetition rate femtosecond laser irradiation inside glass generates a much larger modification than that by a single pulse. In this study, we determined the temperature...

Ultrashort-pulse laser calligraphy (2008)

Yang, Weijia, Kazansky, Peter G., Shimotsuma, Yasuhiko, Sakakura, Masaaki, Miura, Kiyotaka, Hirao, Kazuyuki

Control of structural modifications inside silica glass by changing the front tilt of an ultrashort pulse is demonstrated, achieving a calligraphic style of laser writing. The phenomena of...

Ultrashort-pulse laser calligraphy (2008)

Yang, Weijia, Kazansky, Peter G., Shimotsuma, Yasuhiko, Sakakura, Masaaki, Miura, Kiyotaka, Hirao, Kazuyuki

Control of structural modifications inside silica glass by changing the front tilt of an ultrashort pulse is demonstrated, achieving a calligraphic style of laser writing. The phenomena of...

Photoinduced microchannels inside silicon by femtosecond pulses (2008)

Chen, Tao, Si, Jinhai, Hou, Xun, Kanehira, Shingo, Miura, Kiyotaka, Hirao, Kazuyuki

We reported on the fabrication of microchannels in the interior of silicon wafers using a femtosecond laser of 800 nm wavelength, which was in the absorption region of silicon. The scanning electron...

Ion exchange in glass using femtosecond laser irradiation (2008)

Kanehira, Shingo, Miura, Kiyotaka, Hirao, Kazuyuki

We explain the occurrence of ion exchange and an index profile around the focal point inside a commercial crown glass formed by femtosecond laser irradiation. The index profile in the photoinduced...

Femtosecond pulsed laser as a microscalpel for microdissection and isolation of specific sections from biological samples (2007)

Sakakura, Masaaki, Kajiyama, Shinichiro, Tsutsumi, Masafumi, Si, Jinhai, Fukusaki, Eiichiro, Tamaru, Yutaka, ...

The fermosecond laser is a candidate tool for dissecting and obtaining specific tissues or cells from biological samples. In this paper, we report on the dissection of flammable (heat-sensitive)...

Photoconversion of copper flakes to nanowires with ultrashort pulse laser irradiation (2007)

Shimotsuma, Yasuhiko, Yuasa, Toshirou, Homma, Hidekazu, Sakakura, Masaaki, Nakao, Atsuo, Miura, Kiyotaka, ...

The size and shape of nanoscale materials provide important control over many of the physics and chemical properties, including electric and thermal conductivity, luminescence, and catalytic...

Application of femtosecond-laser induced nanostructures in optical memory (2007)

Shimotsuma, Yasuhiko, Sakakura, Masaaki, Miura, Kiyotaka, Qiu, Jiarong, Kazansky, Peter G., Fujita, Koji, ...

The femtosecond laser induced micro- and nanostructures for the application to the three-dimensional optical data storage are investigated. We have observed the increase of refractive index W due to...