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Temporally stable and continuously tunable laser device fabricated using polymerized cholesteric liquid crystals

Title
Temporally stable and continuously tunable laser device fabricated using polymerized cholesteric liquid crystals
Authors
Jeong M.-Y.Wu J.W.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2012
Journal Title
Japanese Journal of Applied Physics
ISSN
0021-4922JCR Link
Citation
vol. 51, no. 8 PART 1
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We realized the fabrication of a temporally stabilized continuously tunable laser device using a UV-curable polymerized dye-doped cholesteric liquid crystal wedge cell. The spatial tuning resolution was less than 1 nm over a 70 nm spectral range. The continuous tuning behavior of the polymerized wedge cholesteric liquid crystal (CLC) cell is due to the fact that the concentration of the pitch gradient matches the helical pitch determined by the cell thickness. After about 1 year had elapsed, the spectral range of continuous laser tuning was nearly maintained in the polymerized CLC wedge cells. This scheme raises the possibility of practical applications of the CLC laser device, which allows for a wide tunability of single-mode laser emissions. © 2012 The Japan Society of Applied Physics.
DOI
10.1143/JJAP.51.082702
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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