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| Presentation | 2012-05-25 09:35 Phase-sensitive CARS spectroscopy by phase modulation of monochromatic component in broadband pulses Takayuki Suzuki, Kazuhiko Misawa (Tokyo Univ. of A&T)  LQE2012-1 Link to ES Tech. Rep. Archives: LQE2012-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the field of CARS spectroscopy using a broadband light source, nonresonant background (NRB) which lies on and hides resonant signals is known to be one of the major problems. Water is especially a large noise source which makes biomedical application quiet difficult. In this study, we proposed phase-sensitive detection of resonant signals normally buried in the NRB by a narrowband phase modulation on a broadband laser pulse. Here, the NRB are positively used as local oscillator for the detection. We demonstrated CARS spectroscopy based on the proposed phase sensitive method with a sample of chloroform molecules. We successfully obtain sharp resonant signals of chloroform with a frequency resolution of 8 cm$^{-1}$ and signal-to-noise ratio of greater than 9 dB. We also extend our method to two dimensional microscopy for chloroform droplets in water. The chloroform droplets were clearly observed even when they were embedded in water. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Femtosecond pulse / CARS spectroscopy / Phase modulation / Heterodyne detection / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 62, LQE2012-1, pp. 1-5, May 2012. | |
| Paper # | LQE2012-1 | |
| Date of Issue | 2012-05-18 (LQE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | LQE2012-1 Link to ES Tech. Rep. Archives: LQE2012-1 |
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| Conference Information | |
| Committee | LQE LSJ |
| Conference Date | 2012-05-25 - 2012-05-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Univ. of Fukui (Bunkyo Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Quantum optics, nonlinear optics, ultra-high speed phenomenon, etc. |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2012-05-LQE-LSJ |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Phase-sensitive CARS spectroscopy by phase modulation of monochromatic component in broadband pulses |
| Sub Title (in English) | |
| Keyword(1) | Femtosecond pulse |
| Keyword(2) | CARS spectroscopy |
| Keyword(3) | Phase modulation |
| Keyword(4) | Heterodyne detection |
| Keyword(5) | |
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| 1st Author's Name | Takayuki Suzuki |
| 1st Author's Affiliation | Tokyo University of Agriculture and Technology (Tokyo Univ. of A&T) |
| 2nd Author's Name | Kazuhiko Misawa |
| 2nd Author's Affiliation | Tokyo University of Agriculture and Technology (Tokyo Univ. of A&T) |
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| Speaker | Author-1 |
| Date Time | 2012-05-25 09:35:00 |
| Presentation Time | 25 minutes |
| Registration for | LQE |
| Paper # | LQE2012-1 |
| Volume (vol) | vol.112 |
| Number (no) | no.62 |
| Page | pp.1-5 |
| #Pages | 5 |
| Date of Issue | 2012-05-18 (LQE) |
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