Search Results - "Imasaka, Kotaro"

Antenna-enhanced high harmonic generation in a wide-bandgap semiconductor ZnO by Imasaka, Kotaro, Kaji, Tomohiro, Shimura, Tsutomu, Ashihara, Satoshi

“…High harmonic generation (HHG) in solids has great potential for coherent extreme ultraviolet (EUV) sources, all-optical band-structure reconstruction, and…”
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Polarization-Resolved Study of High Harmonics from Bulk Semiconductors by Kaneshima, Keisuke, Shinohara, Yasushi, Takeuchi, Kengo, Ishii, Nobuhisa, Imasaka, Kotaro, Kaji, Tomohiro, Ashihara, Satoshi, Ishikawa, Kenichi L, Itatani, Jiro

“…The polarization property of high harmonics from gallium selenide is investigated using linearly polarized midinfrared laser pulses. With a high electric…”
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High harmonic generation from GaSe in a deep-UV range well above the bandgap by Imasaka, Kotaro, Shinohara, Yasushi, Kaji, Tomohiro, Kaneshima, Keisuke, Ishii, Nobuhisa, Itatani, Jiro, Ishikawa, Kenichi L., Ashihara, Satoshi

“…We demonstrate high harmonic generation from GaSe in the deep-UV range with its photon energy reaching three times the bandgap energy. The harmonic spectrum…”
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Antenna-enhanced high harmonic generation in a wide-bandgap semiconductor ZnO by Imasaka, Kotaro, Kaji, Tomohiro, Shimura, Tsutomu, Ashihara, Satoshi

“…We demonstrate high harmonic generation (HHG) into deep-UV range in a ZnO single crystal with resonant nanoantennas. Non-perturbative HHG is successfully…”
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Ultrashort near-infrared pulse generation by non-collinear optical parametric amplification in LiInS 2 by Imasaka, Kotaro, Ogawa, Kanade, Ishii, Nobuhisa, Maruyama, Momoko, Itakura, Ryuji

“…We demonstrate non-collinear optical parametric amplification (NOPA) in LiInS 2 to generate ultrashort near-infrared pulses. White light pulses around 1400 nm…”
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Excitation of multiple phonon modes in copper metaborate CuB$_2$O$_4$ via non-resonant impulsive stimulated Raman scattering by Imasaka, Kotaro, Pisarev, Roman V, Bezmaternykh, Leonard N, Shimura, Tsutomu, Kalashnikova, Alexandra M, Satoh, Takuya

“…Phys. Rev. B 98, 054303 (2018) Excitation of four coherent phonon modes of different symmetries has been realized in copper metaborate CuB$_2$O$_4$ via…”
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