Journal
ORGANIC ELECTRONICS
Volume 13, Issue 9, Pages 1602-1605Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2012.04.022
Keywords
Organic crystal; Organic laser; Distributed feedback; Interference lithography
Funding
- National Basic Research Program of China (973 Program) [20l1CB013005]
- Natural Science Foundation of China (NSFC) [90923037, 61107024]
- Jilin University [2011J008]
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A simple method has been proposed to fabricate active waveguide grating structures as distributed feedback configuration for organic crystal lasers. Organic single crystals, 2,5-bis(4-biphenyl)bithiophene (BP2T), act as both the gain medium and the waveguide. The distributed feedback structures are fabricated separately on top of crystals through interference lithography. The lasing emissions centered at 566 nm with FWHM of 1.1 nm have been observed when the pump intensity exceeds 19 mu J cm (2). This method features simple, nondestructive, and it is expected to be applied in the electronically pumped laser devices. (C) 2012 Elsevier B. V. All rights reserved.
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