| Presentation | 2020-10-23 Molecule-sensing scheme in which pair of distant comb-lines (delta 174 GHz) from all-optical semiconductor gate resonantly crosses acetylene-molecule's counterpart-pair of absorption lines. Naoki Takahashi, Chaoyi Wang, Kyosuke Nagasaka, Yushi Suzuki, Kodai Ishida, Yoshiyasu Ueno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Portable dilute-gas-molecule-density measurement systems are bases for monitoring environmental load-gas densities in industrial areas. So are they for health-care diagnostics done by analyzing patient’s breath-gas samples. In this work, we propose a gas-molecule-sensing scheme in which a pair of 174-GHz-separated comb-lines generated by 10.390-GHz-repetition mode-locked light source crosses an acetylene-molecule’s counterpart pair of 174-GHz-separated absorption lines located near optical frequency 195 THz (wavelength 1540 nm). In fact, we detected smooth resonance curves of this pair of optical absorption lines (each of whose widths was about 600 MHz) by precisely detuning all of this input comb’s optical-frequency positions near 195 THz by amount of delta 2 GHz, by which we demonstrated high specificity of this molecule-sensing scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Laser sensing / Dilute-special-molecule’s gas-sensor / Optical-frequency-comb / narrow-bandwidth / all-optical-gate / vibration-rotation state / unequal-spacing |
| Paper # | OCS2020-20,OPE2020-43,LQE2020-23 |
| Date of Issue | 2020-10-16 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OPE / OCS / LQE |
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| Conference Date | 2020/10/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Goji Nakagawa(Fujitsu) / Joji Maeda(Tokyo Univ. of Science) / Hiroshi Yasaka(Tohoku Univ.) |
| Vice Chair | Takaaki Ishigure(Keio Univ.) / / Toshitada Umezawa(NICT) |
| Secretary | Takaaki Ishigure(Gunma Univ.) / (Fujikura) / Toshitada Umezawa(NTT) |
| Assistant | Junichi Fujikata(PETRA) / Toshio Watanabe(Kagoshima Univ.) / / Kazuue Fujita(Hamamatsu) / Nobuhiko Nishiyama(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Optical Communication Systems / Technical Committee on Lasers and Quantum Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Molecule-sensing scheme in which pair of distant comb-lines (delta 174 GHz) from all-optical semiconductor gate resonantly crosses acetylene-molecule's counterpart-pair of absorption lines. |
| Sub Title (in English) | |
| Keyword(1) | Laser sensing |
| Keyword(2) | Dilute-special-molecule’s gas-sensor |
| Keyword(3) | Optical-frequency-comb |
| Keyword(4) | narrow-bandwidth |
| Keyword(5) | all-optical-gate |
| Keyword(6) | vibration-rotation state |
| Keyword(7) | unequal-spacing |
| 1st Author's Name | Naoki Takahashi |
| 1st Author's Affiliation | The University of Electro-Communications(UEC) |
| 2nd Author's Name | Chaoyi Wang |
| 2nd Author's Affiliation | The University of Electro-Communications(UEC) |
| 3rd Author's Name | Kyosuke Nagasaka |
| 3rd Author's Affiliation | The University of Electro-Communications(UEC) |
| 4th Author's Name | Yushi Suzuki |
| 4th Author's Affiliation | The University of Electro-Communications(UEC) |
| 5th Author's Name | Kodai Ishida |
| 5th Author's Affiliation | The University of Electro-Communications(UEC) |
| 6th Author's Name | Yoshiyasu Ueno |
| 6th Author's Affiliation | The University of Electro-Communications(UEC) |
| Date | 2020-10-23 |
| Paper # | OCS2020-20,OPE2020-43,LQE2020-23 |
| Volume (vol) | vol.120 |
| Number (no) | OCS-206,OPE-207,LQE-208 |
| Page | pp.pp.61-66(OCS), pp.61-66(OPE), pp.61-66(LQE), |
| #Pages | 6 |
| Date of Issue | 2020-10-16 (OCS, OPE, LQE) |