100 citations · 585 across the 23 of their papers we have counts for
23 papers
Dual terahertz frequency combs for photonic RF readout of refractive index sensing with frequency multiplication and active-dummy temperature compensation
Masayuki Higaki, Yoshiaki Nakajima, Shuji Taue +4
We present a unified refractive index (RI) sensing platform that integrates THz-comb-based frequency multiplication with dual-comb active-dummy temperature compensation. In convent…
Laser-scanning optical-frequency-comb microscopy for multimodal imaging
Shimpei Kajiwara, Eiji Hase, Shota Nakano +9
We introduce a novel laser-scanning optical microscopy technique that employs optical-frequency-comb (OFC) lasers. This method facilitates multimodal spectroscopic imaging by analy…
Reduction of temperature drift in refractive-index-sensing optical frequency comb by active-dummy compensation of dual-comb configuration
Shogo Miyamura, Masayuki Higaki, Shuji Taue +5
Refractive-index (RI) sensing plays a pivotal role in various domains, encompassing applications like glucose sensing, biosensing, and gas detection. Despite the advantages of opti…
Wireless data transmission in a 560-GHz band using low-phase-noise terahertz wave generated by photomixing of a pair of distributed feedback lasers injection-locking to Kerr micro-resonator soliton comb
Yu Tokizane, Shota Okada, Takumi Kikuhara +12
The demand for higher data rates in next-generation mobile wireless communication systems (6G) has led to significant interest in terahertz (THz) waves as a high-frequency, broad m…
Coherent linking between confocal amplitude image and confocal phase image in dual-comb microscopy
Takahiko Mizuno, Takuya Tsuda, Eiji Hase +3
This paper presents a coherent linking approach between confocal amplitude and confocal phase images acquired using dual-comb microscopy (DCM). DCM combines the advantages of confo…
Jones-matrix dual-comb spectroscopic polarimetry
Hidenori Koresawa, Hiroki Kitahama, Shogo Tanimura +6
Spectroscopic polarimetry (SP) is a powerful tool for evaluation of thin film, optical materials, and biological samples because it can provide both polarimetric and spectroscopic…
Carrier conversion from terahertz wave to dual-wavelength near-infrared light injection-locking to optical comb using asynchronous nonpolarimetric electro-optic downconversion with electro-optic polymer modulator
Yudai Matsumura, Yu Tokizane, Eiji Hase +12
THz waves are promising wireless carriers for next-generation wireless communications, where a seamless connection from wireless to optical communication is required. In this study…
Nanometer-precision surface metrology of millimeter-size stepped objects using full-cascade-linked synthetic-wavelength digital holography using a line-by-line full-mode-extracted optical frequency comb
Eiji Hase, Yu Tokizane, Kazuki Sadahiro +3
Digital holography (DH) is a powerful tool for surface profilometry of objects with sub-wavelength precision. In this article, we demonstrate full-cascade-linked synthetic-waveleng…
Plasmon-molecule remote coupling via column-structured silica layer for enhancing biophotonic analysis
Takeo Minamikawa, Reiko Sakaguchi, Yoshinori Harada +7
We demonstrated remote plasmonic enhancement (RPE) by a dense random array of Ag nanoislands (AgNIs) that were partially gold-alloyed and attached with column-structured silica (CS…
Rapid, high-sensitivity detection of biomolecules using dual-comb biosensing: application to the SARS-CoV-2 nucleocapsid protein
Shogo Miyamura, Ryo Oe, Takuya Nakahara +11
Rapid, sensitive detection of biomolecules is important for improved testing methods for viruses as well as biomarkers and environmental hormones. For example, testing for SARS-CoV…
Computationally image-corrected dual-comb microscopy with a free-running single-cavity dual-comb fiber laser
Takahiko Mizuno, Yoshiaki Nakajima, Yuya Hata +6
Dual-comb microscopy (DCM), an interesting imaging modality based on the optical-frequency-comb (OFC) mode and image pixel one-to-one correspondence, benefits from scan-less full-f…
Scan-less full-field fluorescence-lifetime dual-comb microscopy using two-dimensional spectral mapping and frequency multiplexing of dual-optical-comb beats
Takahiko Mizuno, Eiji Hase, Takeo Minamikawa +5
Fluorescence lifetime imaging microscopy (FLIM) is a powerful tool for quantitative fluorescence imaging because fluorescence lifetime is independent of concentration of fluorescen…
Optical image amplification in dual-comb microscopy by use of optical-fiber-amplified interferogram
Takahiko Mizuno, Takuya Tsuda, Eiji Hase +6
Dual-comb microscopy (DCM), based on a combination of dual-comb spectroscopy (DCS) with two-dimensional spectral encoding (2D-SE), is a promising method for scan-less confocal lase…
Comb-mode-resolved adaptive sampling terahertz dual-comb spectroscopy with a free-running single-cavity fiber laser
Jie Chen, Kazuki Nitta, Xin Zhao +5
Mode-resolved dual-comb spectroscopy (DCS) is an emerging spectroscopic tool with the potential to simultaneously achieve a broad spectral coverage and ultrahigh spectral resolutio…
Refractive index sensing with temperature compensation by a multimode-interference fiber-based optical frequency comb sensing cavity
Ryo Oe, Takeo Minamikawa, Shuji Taue +7
We proposed a refractive index (RI) sensing method with temperature compensation by using an optical frequency comb (OFC) sensing cavity employing a multimode-interference (MMI) fi…
Lock-in-detection dual-comb spectroscopy
Hidenori Koresawa, Kyuki Shibuya, Takeo Minamikawa +9
Dual-comb spectroscopy (DCS) is useful for gas spectroscopy due to high potential of optical frequency comb (OFC). However, fast Fourier transform (FFT) calculation of a huge amoun…
Multicascade-linked synthetic wavelength digital holography using an optical-comb-referenced frequency synthesizer
Masatomo Yamagiwa, Takeo Minamikawa, Clément Trovato +11
Digital holography (DH) is a promising method for non-contact surface topography because the reconstructed phase image can visualize the nanometer unevenness in a sample. However,…
Label-free evaluation of myocardial infarct in surgically excised ventricular myocardium by Raman spectroscopy
Tsunehisa Yamamoto, Takeo Minamikawa, Yoshinori Harada +4
Understanding the viability of the ischemic myocardial tissue is a critical issue in determining the appropriate surgical procedure for patients with chronic heart failure after my…
Refractive-index-sensing radio-frequency comb with intracavity multi-mode interference fibre sensor
Roy Oe, Shuji Taue, Takeo Minamikawa +8
Optical frequency combs have attracted attention as optical frequency rulers due to their tooth-like discrete spectra together with their inherent mode-locking nature and phase-loc…
Dual terahertz comb spectroscopy with a single free-running fibre laser
Guoqing Hu, Tatsuya Mizuguchi, Ryo Oe +6
Dual THz comb spectroscopy has the potential to be used as universal THz spectroscopy with high spectral resolution, high spectral accuracy, and broad spectral coverage; however, t…
Dual-optical-comb spectroscopic ellipsometry
Takeo Minamikawa, Yi-Da Hsieh, Kyuki Shibuya +8
Spectroscopic ellipsometry is a means to investigate optical and dielectric material responses. Conventional spectroscopic ellipsometry has trade-offs between spectral accuracy, re…
Scan-less confocal phase microscopy based on dual comb spectroscopy of two-dimensional-image-encoding optical frequency comb
Eiji Hase, Takeo Minamikawa, Shuji Miyamoto +10
Confocal imaging and phase imaging are powerful tools in life science research and industrial inspection. To coherently link the two techniques with different depth resolutions, we…
Scan-less hyperspectral dual-comb single-pixel-imaging in both amplitude and phase
Kyuki Shibuya, Takeo Minamikawa, Yasuhiro Mizutani +4
We have developed a hyperspectral imaging scheme that involves a combination of dual-comb spectroscopy and Hadamard-transform-based single-pixel imaging. The scheme enables us to o…