Browsing by Author "Chiu, Tzu-Ting"

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Wavelength Tuning by Bending a Flexible Photonic Crystal Laser
(2013-06-15)
Hsu, Kung-Shu
;
Chiu, Tzu-Ting
;
Lee, Po-Tsung
;
Shih, Min-Hsiung
;
光電工程學系
This study demonstrated mechanical wavelength fine-tuning of a flexible photonic crystal (PhC) laser. A triangular PhC structure was fabricated in an InGaAsP layer on top of a polydimethylsiloxane substrate. Experiments showed two lasing modes at symmetry points K and M in the first PhC band. The laser structure was bent along the Gamma - M direction and the lasing wavelength was fine-tuned by varying the bending radius. The lasing wavelength shift is attributed to PhC lattice distortion and its tuning behavior corresponds with the simulation results. This ultra-small, wavelength-tunable laser could function as a unique light source for integrated optoelectronic circuits.