Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers
Abstract A high efficiency band-edge cholesteric liquid crystal (CLC) laser comprising an optimal binary-dye mixture (OBD) with 62 wt% DCM and 38 wt% PM597 as the active medium is scrutinized. The measurements indicate that both the fluorescence spectrum width and the order parameter of OBD in the h...
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Oxford International Collaboration Centre Press (OICC press)
2019-01-01
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| Series: | Journal of Theoretical and Applied Physics |
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| Online Access: | http://link.springer.com/article/10.1007/s40094-019-0318-3 |
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| author | Hamidreza Shirvani-Mahdavi Soheila Ebrahimi-Azandariani |
| author_facet | Hamidreza Shirvani-Mahdavi Soheila Ebrahimi-Azandariani |
| author_sort | Hamidreza Shirvani-Mahdavi |
| collection | DOAJ |
| description | Abstract A high efficiency band-edge cholesteric liquid crystal (CLC) laser comprising an optimal binary-dye mixture (OBD) with 62 wt% DCM and 38 wt% PM597 as the active medium is scrutinized. The measurements indicate that both the fluorescence spectrum width and the order parameter of OBD in the host of nematic liquid crystal (BL009) enhance compared with those for each individual dye. Furthermore, at the fluorescence peak, the optical efficiency of the PM597-doped CLC laser is ~ 1.5× higher than that of DCM, and the laser emission energy for OBD-doped CLC between the wavelengths 595 nm and 613 nm is even higher than that of PM597-doped CLC, so that at the maximum fluorescence of OBD, $$\lambda \approx 605\;{\text{nm}}$$ λ≈605nm , the improvement is over 20%. |
| format | Article |
| id | doaj-art-e4f1660497af4c68b9b3f89c86a8b32c |
| institution | OA Journals |
| issn | 2251-7227 2251-7235 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Oxford International Collaboration Centre Press (OICC press) |
| record_format | Article |
| series | Journal of Theoretical and Applied Physics |
| spelling | doaj-art-e4f1660497af4c68b9b3f89c86a8b32c2025-08-20T01:51:06ZengOxford International Collaboration Centre Press (OICC press)Journal of Theoretical and Applied Physics2251-72272251-72352019-01-0113171510.1007/s40094-019-0318-3Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasersHamidreza Shirvani-Mahdavi0Soheila Ebrahimi-Azandariani1Photonics Research Laboratory, Department of Physics, Islamic Azad University (Central Tehran Branch)Photonics Research Laboratory, Department of Physics, Islamic Azad University (Central Tehran Branch)Abstract A high efficiency band-edge cholesteric liquid crystal (CLC) laser comprising an optimal binary-dye mixture (OBD) with 62 wt% DCM and 38 wt% PM597 as the active medium is scrutinized. The measurements indicate that both the fluorescence spectrum width and the order parameter of OBD in the host of nematic liquid crystal (BL009) enhance compared with those for each individual dye. Furthermore, at the fluorescence peak, the optical efficiency of the PM597-doped CLC laser is ~ 1.5× higher than that of DCM, and the laser emission energy for OBD-doped CLC between the wavelengths 595 nm and 613 nm is even higher than that of PM597-doped CLC, so that at the maximum fluorescence of OBD, $$\lambda \approx 605\;{\text{nm}}$$ λ≈605nm , the improvement is over 20%.http://link.springer.com/article/10.1007/s40094-019-0318-3Binary-dye mixtureBand-edge laserFluorescence spectrumSlope efficiency |
| spellingShingle | Hamidreza Shirvani-Mahdavi Soheila Ebrahimi-Azandariani Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers Journal of Theoretical and Applied Physics Binary-dye mixture Band-edge laser Fluorescence spectrum Slope efficiency |
| title | Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| title_full | Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| title_fullStr | Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| title_full_unstemmed | Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| title_short | Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| title_sort | effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers |
| topic | Binary-dye mixture Band-edge laser Fluorescence spectrum Slope efficiency |
| url | http://link.springer.com/article/10.1007/s40094-019-0318-3 |
| work_keys_str_mv | AT hamidrezashirvanimahdavi effectofcombinedlaserdyesontheefficiencyofcholestericliquidcrystallasers AT soheilaebrahimiazandariani effectofcombinedlaserdyesontheefficiencyofcholestericliquidcrystallasers |