Original paper
2014
NEW! Y. Tanaka, E. Hase, S. Fukushima, Y. Ogura, T. Yamashita, T. Hirao, T. Araki, and T. Yasui, "Motion-artifact-robust, polarization-resolved second-harmonic-generation microscopy based on rapid polarization switching with electro-optic Pockells cell and its application to in vivo visualization of collagen fiber orientation in human facial skin,” Biomed. Opti. Express, Vol. 5, Iss. 4, pp. 1099–1113 (2014). NEW! Yi-Da Hsieh, Yuki Iyonaga, Yoshiyuki Sakaguchi, Shuko Yokoyama, Hajime Inaba, Kaoru Minoshima, Francis Hindle, Tsutomu Araki, and Takeshi Yasui, "Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs,” Sci. Reports 4 , 3816 (2014).
2013
T. Iwata, S. Yoshioka, S. Nakamura, Y. Mizutani, and Takeshi Yasui, "Prediction of the thickness of a thin paint film by applying a modified partial-least-squares-1 method to data obtained in terahertz reflectometry,”J. Infrared, Millimeter, and Terahertz Waves, Volume 34, Issue 10, pp. 646-659 (2013). T. Yasui, Y.-D. Hsieh, Y. Iyonaga, Y. Sakaguchi, S. Yokoyama, H. Inaba, K. Minoshima, F. Hindle, and T. Araki, “Gapless dual-comb spectroscopy in terahertz region,” arXiv:1303.5799 (2013). R. Tanaka, S. Fukushima, K. Sasaki, Y. Tanaka, H. Murota, T. Matsumoto, T. Araki, and T. Yasui, "In vivo visualization of dermal collagen fiber in skin burn by collagen-sensitive second-harmonic-generation microscopy," J. Biomed. Opt., Vol. 18, No. 6, 061231 (2013). S. Nagase, M. Yamanari, R. Tanaka, T. Yasui, M. Miura, T.Iwasaki, H. Goto, Y. Yasuno mail, "Anisotropic Alteration of Scleral Birefringence to Uniaxial Mechanical Strain," PLOS ONE , Vol. 8, Issue 3, e58716 (2013). T. Yamashita, Y. Ogura, Y. Tanaka, R. Tanaka, T. Yasui, T. Araki, and T. Hirao, "Noninvasive in situ assessment of structural alteration of human dermis caused by photoaging using a novel collagen-specific imaging technique," IFSCC magazine, Vol. 16(1) P.3-7 (2013). Y.-D. Hsieh, Y. Iyonaga, Y. Sakaguchi, S. Yokoyama, H. Inaba, K. Minoshima, F. Hindle, Y. Takahashi, M. Yoshimura, Y. Mori, T. Araki, and T. Yasui, "Terahertz comb spectroscopy traceable to microwave frequency standard," IEEE Transactions on Terahertz Science and Technology, Vol. 3 , Issue 3, pp. 322-330 (2013). ［Opt. Express cover movie ］ M. Jewariya, E. Abraham, T. Kitaguchi, Y. Ohgi, M. Minami, T. Araki, and T. Yasui, "Fast three-dimensional terahertz computed tomography using real-time line projection of intense terahertz pulse," Opt. Express, Vol. 21, Issue 2, pp. 2423-2433 (2013). T. Yasui, M. Yonetsu, R. Tanaka, Y. Tanaka, S. Fukushima, T. Yamashita, Y. Ogura, T. Hirao, H. Murota, T. Araki, "In vivo observation of age-related structural changes of dermal collagen in human facial skin using collagen-sensitive second harmonic generation microscope equipped with 1250-nm mode-locked Cr:Forsterite laser," J. Biomed. Opt., Vol. 18, No. 3, 031108 (2013). (contributed review) T.Yasui, M. Jewariya, T. Yasuda, M. Schirmer, T. Araki, and E. Abraham, "Real-time two-dimensional spatio-temporal terahertz imaging based on non-collinear free-space electro-optic sampling and application to functional terahertz imaging of moving object," IEEE J. Selected Topics in Quantum Electron., Vol. 19, Issue 1, art. 8600110 (2013).
2012
T. Yasui, K. Kawamoto, Y.-D. Hsieh, Y. Sakaguchi, M. Jewariya, H. Inaba, K. Minoshima, F. Hindle, and T. Araki, "Enhancement of spectral resolution and accuracy in asynchronous-optical-sampling terahertz time-domain spectroscopy for low-pressure gas-phase analysis," Opt. Express Vol. 20, Iss. 14, pp. 15071–15078 (2012).
2011
F. Hindle, G. Mouret, S. Eliet, M. Guinet, A. Cuisset, R. Bocquet, T. Yasui, and D. Rovera, "Widely tunable THz synthesizer", Applied Physics B, Vol. 104, Number 4, pp. 763-768 (2011).
E. Abraham, Y. Ohgi, M. Minami, M. Jewariya, M. Nagai, T. Araki, and T. Yasui, "Real-time line projection for fast terahertz spectral computed tomography," Opt. Lett., Vol. 36, Issue 11, pp. 2119-2121 (2011). T. Yasui, H. Takahashi, K. Kawamoto, Y. Iwamoto, K. Arai, T. Araki, H. Inaba, and K. Minoshima, "Widely and continuously tunable terahertz synthesizer traceable to a microwave frequency standard", Opt. Express, Vol. 19, Issue 5, pp. 4428-4437 (2011). (invited review) T. Yasui, S. Yokoyama, H. Inaba, K. Minoshima, T. Nagatsuma, and T. Araki, "Terahertz frequency metrology based on frequency comb," IEEE J. Selected Topics in Quantum Electron., Vol. 17, Issue 1, pp. 191-201 (2011).
2010
T. Yasui, Y. Kabetani, Y. Ohgi, S. Yokoyama,, T. Araki,"Absolute distance measurement of optically rough objects using asynchronous-optical-sampling terahertz impulse ranging," Appl. Opt., Vol. 49 Issue 28, pp.5262-5270 (2010)
M. Schirmer, M. Fujio, M. Minami, J. Miura, T. Araki, and T. Yasui, "Biomedical applications of a real-time terahertz color scanner," Biomed. Opt. Express, Vol. 1, Issue 2, pp. 354-366 (2010) .
T. Yasui, M. Nose, A. Ihara, K. Kawamoto, S. Yokoyama, H. Inaba, K. Minoshima, and T. Araki, "Fiber-based, hybrid terahertz spectrometer using dual fiber combs," Opt. Lett., Vol. 35, Issue 10, pp. 1689-1691 (2010). T. Yasui, H. Takahashi, Y. Iwamoto, H. Inaba, and K Minoshima, "Continuously tunable, phase-locked, continuous-wave terahertz generator based on photomixing of two continuous-wave lasers locked to two independent optical combs," J. Appl. Phys., Volume 107, Issue 3, 033111 (2010)
2009
S. Yokoyama, T. Yokoyama, Y. Hagihara, T. Araki, and T. Yasui, "A distance meter using a terahertz intermode beat in an optical frequency comb", Opt. Express, Vol. 17, Issue 20, pp. 17324-17337 (2009).
T. Yasui, R. Nakamura, K. Kawamoto, A. Ihara, Y. Fujimoto, S. Yokoyama, H. Inaba, K. Minoshima, T. Nagatsuma, and T. Araki, "Real-time monitoring of continuous-wave terahertz radiation using a fiber-based, terahertz-comb-referenced spectrum analyzer", Opt. Express, Vol. 17, Issue 19, pp. 17034-17043 (2009). T. Yasui, Y. Takahashi, M. Ito, S. Fukushima, and T. Araki, "Ex vivo and in vivo second-harmonic-generation imaging of dermal collagen fiber in skin: comparison of imaging characteristics between mode-locked Cr:Forsterite and Ti:Sapphire lasers," Appl. Opt., Vol. 48, No. 10, pp.D88-D95 (2009). T. Yasui, Y. Takahashi, S. Fukushima, Y. Ogura, T. Yamashita, T. Kuwahara, T. Hirao, and T. Araki, "Observation of dermal collagen fiber in wrinkled skin using polarization-resolved secondharmonic-generation microscopy," Optics Express, Vol. 17, Issue 2, pp. 912-923 (2009).
2008
S. Yokoyama, R. Nakamura, M. Nose, T. Araki, and T. Yasui, "Terahertz spectrum analyzer based on a terahertz frequency comb", Opt. Express, Vol. 16, Issue 17, pp. 13052-13061 (2008).
T. Yasui, K. Sawanaka, A. Ihara, E. Abraham, M. Hashimoto, and T. Araki, "Real-time terahertz color scanner for moving objects," Opt. Express, Vol. 16(2), pp. 1208-1221 (2008).
2007
T. Yasuda, T. Iwata, T. Araki, and T. Yasui, "Improvement of minimum paint film thickness for THz paintmeters by multiple regression analysis", Appl. Opt. 46(30), pp. 7518-7526 (2007). N. Nakamura, H. Ogi, T. Yasui, M. Fujii, and M. Hirao, "Mechanism of elastic softening behavior in superlattice", Phys. Rev. Lett. 99 , 035502 (2007).
H. Ogi, M. Fujii, N. Nakamura, T. Yasui, M. Hirao, "Stiffened ultrathin Pt films confirmed by acoustic-phonon resonances", Phys. Rev. Lett. 98 , 195503 (2007).
2006
T. Yasuda, T. Yasui, T. Araki, and E. Abraham," Real-time two-dimensional terahertz tomography of moving objects", Opt. Comm., Vol. 267, pp. 128-136 (2006). T. Yasui, Y. Kabetani, E. Saneyoshi, S. Yokoyama, and T. Araki, "Terahertz frequency comb by multi-frequency-heterodyning photoconductive detection for high-accuracy, high-resolution terahertz spectroscopy", Appl. Phys. Lett., Vol. 88, 241104 (2006). N. Nakamura, H. Ogi, H. Nitta, H. Tanei, M. Fujii, T. Yasui, and M. Hirao, "
Y. Hori, Y. Yasuno, S. Sakai, M. Matsumoto, T. Sugawara, V. Madjarova, M. Yamanari, S. Makita, T. Yasui, T. Araki, M. Itoh, T. Yatagai, "Automatic characterization and segmentation of human skin using three-dimensional optical coherence tomography", Opt. Express, Vol. 14, Issue 5, pp. 1862-1877 (2006) Y. Hori, T. Yasui, and T. Araki, "Optical glucose monitoring based on femtosecond two-color pulse interferometry", Opt. Rev, Vol. 13(1), pp. 29-33 (2006).
2005
T. Yasui, K. Sasaki, Y. Tohno, and T. Araki, "Tomographic imaging of collagen fiber orientation in human tissue using depth-resolved polarimetry of second-harmonic-generation light", Opt. Quantum Electron., Vol. 37, pp. 1397-1408 (2005). T. Yasui, T. Yasuda, K. Sawanaka, and T. Araki, "A terahertz paintmeter for non-contact monitoring of thickness and drying progress in paint film", Appl. Opt., Vol. 44, No.32, pp. 6849-6856 (2005). T. Yasui, E. Saneyoshi and T. Araki, "Asynchronous optical sampling terahertz time-domain spectroscopy for ultrahigh spectral resolution and rapid data acquisition", Appl. Phys. Lett., Vol. 87, 061101 (2005). Y. Hori, T. Yasui and T. Araki, "Multiple-scattering-free optical glucose monitoring based on femtosecond pulse interferometry", Opt. Rev., Vol. 12, no. 3, pp. 202-206, (2005). T. Yasui and T. Araki, "Dependence of terahertz electric field on electric bias and modulation frequency in pulsed terahertz emission from electrically-modulated photoconductive antenna detected with free-space electro-optic sampling", Jpn. J. Appl. Phys., Vol. 44, No. 4A, pp. 1777-1780 (2005) .
2004
T. Yasui, Y. Tohno, and T. Araki, "Determination of collagen fiber orientation in human tissue by polarization measurement of molecular second-harmonic-generation light", Appl. Opt., Vol. 43, pp. 2861-2867 (2004). T. Yasui, Y. Tohno, and T. Araki, "Characterization of collagen orientation in human dermis by two-dimensional second-harmonic-generation polarimetry", J. Biomed. Opt., Vol. 9, No. 2, pp. 259-264 (2004).
2002
T. Yasui, K. Minoshima, E. Abraham, and H. Matsumoto, " Microscopic time-resolved two-dimensional imaging with a femtosecond amplifying optical Kerr gate", Appl. Opt., Vol. 41(24), pp.5191-5194 (2002).
2001
T. Yasui, K. Minoshima and H. Matsumoto, "Stabilization of femtosecond mode-locked Ti:sapphire laser for high-accuracy pulse interferometry", IEEE J. Quantum. Electron., Vol. 37 (1), pp.12-19 (2001).
2000
T. Yasui, K. Minoshima and H. Matsumoto, "Three-dimensional shape measurement of a diffusing surface by use of a femtosecond amplifying optical Kerr gate", Appl. Opt., Vol. 39 (1), pp.65-71 (2000).
1999
K. Minoshima, T. Yasui, E. Abraham, H. Matsumoto, G. Jonusauskas and C. Rulliere, "Three-dimensional imaging using a femtosecond amplifying optical Kerr gate", Opt. Eng., Vol.38(10), pp.1758-1762 (1999).
1997
T. Yasui, T. Araki and N. Suzuki, "Accurate stabilization of a 3 mW single-mode output He-Ne laser by intermittent frequency offset locking to an iodine stabilized He-Ne laser", Opt. Rev., Vol.4(6), pp.675-682 (1997).
1996
T. Yasui, T. Araki and N. Suzuki, "An intermittent frequency offset lock of a transverse Zeeman laser to an iodine stabilized He-Ne laser", Opt. Rev., Vol.3(3), pp.197-201 (1996).
T. Yasui, T. Araki and N. Suzuki, "Intermittent frequency offset lock of a symmetric three-mode stabilized He-Ne laser to an iodine stabilized He-Ne laser", Opt. Rev., Vol.3(6B), pp.528-534 (1996).
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