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Mid-infrared cavity ring-down spectroscopy using DFB quantum cascade laser with optical feedback for radiocarbon detection
| Content Provider | Scilit |
|---|---|
| Author | Terabayashi, Ryohei Saito, Keisuke Sonnenschein, Volker Thomas Okuyama, Yuki Iguchi, Tetsuo Yamanaka, Masahito Nishizawa, Norihiko Yoshida, Kenji Ninomiya, Shinichi Tomita, Hideki |
| Copyright Year | 2020 |
| Description | Journal: Japanese Journal of Applied Physics A linewidth reduction of a distributed feedback quantum cascade laser (DFB-QCL) based on optical feedback for a mid-infrared (MIR) cavity ring down spectroscopy (CRDS)$ ^{14}$C spectrometer is presented. A cat-eye reflector as well as a path-length enhancement by a Herriott cell were employed for a compact optical setup. The laser linewidth was evaluated by monitoring the beat frequency between the DFB-QCL and a MIR optical frequency comb (OFC). The linewidth reduction by optical feedback was clearly observed although slow frequency drifts caused by environmental changes were still visible. A low-bandwidth beat-note lock to the OFC was conducted for long-term stabilization as well as for precise frequency scanning and thereby$ ^{14}$C measurement by MIR CRDS with optical feedback was demonstrated successfully. |
| Related Links | https://iopscience.iop.org/article/10.35848/1347-4065/abb20e/pdf |
| ISSN | 00214922 |
| e-ISSN | 13474065 |
| DOI | 10.35848/1347-4065/abb20e |
| Journal | Japanese Journal of Applied Physics |
| Issue Number | 9 |
| Volume Number | 59 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-09-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Japanese Journal of Applied Physics Optical Feedback |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Engineering |
