Browsing by Author "Lu Tien-Chang"

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Semiconductor optical device having an air media layer and the method for forming the air media layer thereof
(2015-03-31)
Lu Tien-Chang
;
Huang Huei-Min
;
Kuo Hao-Chung
;
Wang Shing-Chung
A method for fabricating air media layer within the semiconductor optical device is provided. The step of method includes a substrate is provided, a GaN thin film is formed on the substrate, a sacrificial layer is formed on the GaN thin film, and a nitride-containing semiconductor layer is formed on the sacrificial layer. The semiconductor optical device is immersed with an acidic solution to remove the portion of sacrificial layer to form an air media layer around the residual sacrificial layer.
Surface-emitting laser device
(2011-07-05)
Chen Shih-Wei
;
Lu Tien-Chang
;
Kuo Hao-Chung
;
Wang Shing-Chung
A surface-emitting laser device includes: a substrate; a low refractive index layer with a refractive index nL and disposed on the substrate; a light emitting layered structure with a refractive index nH, where nH>nL, the light emitting layered structure being formed on the low refractive index layer and having first and second semiconductor layers and a multi-quantum well (MQW) disposed between the first and second semiconductor layers and capable of generating photons having a wavelength λ0; and a two-dimensional photonic crystal (2DPC) formed in the light emitting layered structure and having optical nanostructures arranged into a periodic pattern with a lattice constant a. The nanostructures extend from the first semiconductor layer through the MQW. The 2DPC has a normalized frequency, which is defined as a/λ0, ranging from 0.25 to 0.70.