| Presentation | 2018-10-18 Study on our all-optical-gate-type mode-locked laser's ring-laser-cavity configuration for modelling and then enhancing its output quantum-conversion efficiency Kodai Ishida, Kengo Okano, Kyosuke Nagasaka, Batkhuyag Ganbat, Yukihiro Ishii, Makoto Takeshita, Yoshiyasu Ueno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We are expecting that mode-locked lasers are potentially one- or two-step more functional light sources when they are adopted in optical time-division-multiplexing (OTDM) communication systems, dilute-special-molecule’s gas-sensor systems, etc. in the future industry and/or biological research, than conventionally implemented basically-continuous-wave-laser sources. Before this work, we had demonstrated very narrow 0.6-ps widths of pulses, narrower-then-two-MHz linewidth of each of the many 10-GHz-spaced optical-frequency-comb components, etc. generated by our original all-optical-gate-type mode-locked lasers we experimentally fabricated. Their max average output power was, however, around 0.2-mW, while their external quantum efficiency was around 0.5% only. In this work, we have studied our mode-locked laser’s ring-laser-cavity configuration including its topology more carefully, for modelling and then enhancing its output quantum-conversion efficiency. The amount of optical insertion loss from the intra-cavity loss-compensation amp’s output port through the cavity-output-coupler has turned out to be the most influential. By decreasing this portion’s loss with a few more attentions, this laser’s quantum efficiency has successfully been enhanced to 5.9%, while its average output power was to 12-mW |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | mode-locked laser / optical frequency comb / external differential quantum efficiency / all-optical-gate |
| Paper # | OCS2018-35,OPE2018-71,LQE2018-60 |
| Date of Issue | 2018-10-11 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OPE / LQE / OCS |
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| Conference Date | 2018/10/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kouki Sato(Furukawa Electric Industries) / Kiichi Hamamoto(Kyusyu Univ.) / Itsuro Morita(KDDI Research) |
| Vice Chair | Hiroshi Takahashi(Sophia Univ.) / Hiroshi Aruga(Mitsubishi Electric) |
| Secretary | Hiroshi Takahashi(Univ. of Tokyo) / Hiroshi Aruga(NICT) / (SEI) |
| Assistant | Yuya Shoji(Tokyo Inst. of Tech.) / Kazunori Seno(NTT) / Masaya Nagai(Osaka Univ.) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Optical Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on our all-optical-gate-type mode-locked laser's ring-laser-cavity configuration for modelling and then enhancing its output quantum-conversion efficiency |
| Sub Title (in English) | |
| Keyword(1) | mode-locked laser |
| Keyword(2) | optical frequency comb |
| Keyword(3) | external differential quantum efficiency |
| Keyword(4) | all-optical-gate |
| 1st Author's Name | Kodai Ishida |
| 1st Author's Affiliation | The university of electro communications(UEC) |
| 2nd Author's Name | Kengo Okano |
| 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 | Batkhuyag Ganbat |
| 4th Author's Affiliation | The university of electro communications(UEC) |
| 5th Author's Name | Yukihiro Ishii |
| 5th Author's Affiliation | The university of electro communications(UEC) |
| 6th Author's Name | Makoto Takeshita |
| 6th Author's Affiliation | The university of electro communications(UEC) |
| 7th Author's Name | Yoshiyasu Ueno |
| 7th Author's Affiliation | The university of electro communications(UEC) |
| Date | 2018-10-18 |
| Paper # | OCS2018-35,OPE2018-71,LQE2018-60 |
| Volume (vol) | vol.118 |
| Number (no) | OCS-251,OPE-252,LQE-253 |
| Page | pp.pp.41-46(OCS), pp.41-46(OPE), pp.41-46(LQE), |
| #Pages | 6 |
| Date of Issue | 2018-10-11 (OCS, OPE, LQE) |