Effect of combined laser dyes on the efficiency of cholesteric liquid crystal lasers
| Autor: | Hamidreza Shirvani-Mahdavi, Soheila Ebrahimi-Azandariani |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Slope efficiency Dye laser Materials science Physics and Astronomy (miscellaneous) Cholesteric liquid crystal Analytical chemistry Binary-dye mixture Laser 01 natural sciences Fluorescence lcsh:QC1-999 010305 fluids & plasmas law.invention Wavelength Fluorescence spectrum law Liquid crystal 0103 physical sciences Band-edge laser lcsh:Physics Energy (signal processing) |
| Zdroj: | Journal of Theoretical and Applied Physics, Vol 13, Iss 1, Pp 7-15 (2019) |
| ISSN: | 2251-7235 2251-7227 |
| DOI: | 10.1007/s40094-019-0318-3 |
| Popis: | 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, $$\lambda \approx 605\;{\text{nm}}$$ , the improvement is over 20%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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