The influence of homogenization process on lasing performance in polymer-nematic liquid crystal emulsions
Source abstract
Abstract
Abstract In this letter we report on the results of studies of amplified spontaneous emission in polymer – liquid crystal emulsions based on mixtures of poly(vinyl alcohol) and 5CB nematic liquid crystal doped with three luminescent dyes: DCM, Coumarin 504 and Coumarin 540. The mixture of dyes was used in order to extend the range of stimulated emission spectra. We have investigated the emission properties of four samples with different size and distribution of liquid crystal micro droplets, controlled by the length of time exposure on ultrasounds during the homogenization process. We have designated the threshold conditions for stimulated emission occurrence and compared the emission spectra obtained below as well as above threshold conditions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Liquid Crystal Research Advancements · Photonic Crystals and Applications · Plant and animal studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Thermodynamic and static properties of liquid crystals10.1016/0079-6786(75)90008-4 ↗
2. Modal liquid crystal array of optical elements10.1364/OE.21.024809 ↗
3. All-optical switching and logic gating with spatial solitons in liquid crystals10.1063/1.1519101 ↗
4. Integrated all-optical switch in a cross-waveguide geometry10.1063/1.2197931 ↗
5. Optical devices based on liquid crystal photonic bandgap fibres10.1364/OE.11.002589 ↗
6. Photonics and lasing in liquid crystals10.1098/rsta.2006.1851 ↗
7. The effects of reorientation on the emission properties of a photonic band edge liquid crystal laser
8. Comparison of the performance of photonic band-edge liquid crystal lasers using different dyes as the gain medium10.1063/1.3284939 ↗
9. Liquid crystal ‘blue phases’ with a wide temperature range10.1038/nature03932 ↗
10. Polychromatic liquid crystal laser arrays towards display applications10.1364/OE.16.018827 ↗
11. A nano-patterned photonic crystal laser with a dye-doped liquid crystal10.1063/1.4816243 ↗
12. Wavelength-tuneable laser emission from stretchable chiral nematic liquid crystal gels via in situ photopolymerization10.1039/C6RA05024G ↗
13. Band-edge and random lasing in paintable liquid crystal emulsions10.1063/1.3574915 ↗
14. Random lasing in unbounded dye-doped nematic liquid crystals10.1080/02678292.2015.1126863 ↗
15. Study of low-threshold and high-intensity random lasing in dye doped liquid crystals10.2351/1.4940735 ↗
16. Behaviors of random laser in dye-doped nematic liquid crystal10.1016/j.optcom.2015.09.053 ↗
17. Thermally tunable random laser in dye-doped liquid crystals10.1080/09500340.2013.844867 ↗
18. Svelto · 2010
19. Electronic control of nonresonant random lasing from a dye-doped smectic A* liquid crystal scattering device10.1063/1.1885169 ↗
20. Frequency behavior of coherent random lasing in diffusive resonant media10.1016/j.photonics.2012.04.001 ↗
21. Lasing with resonant feedback in random media10.1016/j.physb.2003.08.030 ↗
22. 3D microlasers from self-assembled cholesteric liquid-crystal microdroplets10.1364/OE.18.026995 ↗
23. Low-threshold lasing at the edge of a photonic stop band in cholesteric liquid crystals10.1364/OL.23.001707 ↗
24. Polymer-stabilized liquid crystal blue phases10.1038/nmat712 ↗
25. Field controlled light scattering from nematic microdroplets10.1063/1.96577 ↗
26. J.W. Doane, G. Chidichimo, N.A. Vaz, Light modulating material comprising a liquid crystal dispersion in a plastic matrix, US Patent 4, Patent Number 4,688,900, 1987.
27. Polymer as an important component of blends and composites with liquid crystals10.1016/S0079-6700(02)00117-X ↗
28. The morphology and dynamics of polymerization-induced phase separation10.1016/j.eurpolymj.2006.01.019 ↗
29. Vicari · 200310.1201/9781420033748 ↗
30. Random lasers with coherent feedback
31. Noginov · 2005
32. Collagen network as the scaffold for spontaneously distributed optical resonators10.1016/j.orgel.2016.09.032 ↗
33. Random lasing from sulforhodamine dye-doped polymer films with high surface roughness10.1007/s00340-012-5120-8 ↗
34. Model for bichromatic laser emission from a laser dye with nanoparticle scatterers10.1103/PhysRevA.68.013805 ↗