Tunable and flexible solvent-free liquid organic distributed feedback lasers
نویسندگان
چکیده
منابع مشابه
Widely tunable distributed-feedback lasers with chirped gratings
A quasicontinuous tuning range of 65 nm at 3.2 m was obtained for continuous wave, single-longitudinal-mode operation at 77 K of an optically pumped distributed-feedback laser with a chirped grating. Interferometric lithography with spherical wavefronts was used to fabricate a large-area chirped grating whose period varied continuously in the direction of the grating lines. Tuning was achieved ...
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Due to the piezoelectric properties of III–V materials, an acoustic wave propagating along the optical axis of a unipolar laser produces a periodic modulation of the carrier density and the optical gain, sufficient for providing distributed feedback ~DFB! with a mode suppression ratio exceeding 30 dB. In contrast to bipolar lasers, the piezoelectric modulation of unipolar carrier density is not...
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We demonstrate the fabrication of a tunable-focus dielectric liquid lens (DLL) on a flexible substrate made of polydimethylsiloxane, which was wrapped onto a goggle surface to show its functionality. As a positive meniscus converging lens, the DLL has the focal length variable from 14.2 to 6.3 mm in 1.3 s when the driving voltage increases to 125 Vrms. The resolving power of the DLL is 17.95 li...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2015
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.4907323