Articles
Wavelength Dependence of Transverse Mode Coupling With/Without E-Block of GaN Laser Cavity (with K. Lal and G. Chavoor), IEEE Photonics Journal (2011)
Transverse mode wavelength dependence in the gallium nitride (GaN) laser cavity is a new topic....
Light Extraction Improvement of GaN LEDs using Nano-scale Top Transmission Gratings (with Greg Chavoor, Ashton Ellaboudy, Xing-Xing Fu, Xiang-Ning Kang, Bei Zhang, and Guo-Yi Zhang), Eleventh International Conference on Solid State Lighting: San Diego, CA (2011)
In this paper, we use a Finite-Difference Time-Domain GaN LED model to study constant wave...
Improvement of Solar Cell Efficiency Using Nano-scale Top and Bottom Grating (with Ashton Ellaboudy and Greg Chavoor), Proceedings of the SPIE : San Diego, CA (2011)
We study solar-cell designs using nano-grating on both top (transmission) and bottom (reflection) of the...
Neural Network Based Edge Detection for Automated Medical Diagnosis (with Dingran Lu, Xiao-Hua Yu, Bin Li, Quan Chen, and Jianhua Zhu), 2011 IEEE International Conference on Information and Automation Proceedings: Shenzhen, China (2011)
Edge detection is an important but rather difficult task in image processing and analysis. In...
Study of Top and Bottom Photonic Gratings on GaN LED With Error Grating Models (with Simeon S. Trieu), IEEE Journal of Quantum Electronics (2010)
The gallium nitride (GaN) light-emitting-diode (LED) top-bottom (or transmission-reflection) grating simulation results with error grating...
Conference Proceedings
Top Transmission Grating GaN LED Simulations for Light Extraction Improvement (with Simeon Trieu, Ashton Ellaboudy, Bei Zhang, Xiang-Ning Kang, Guo-Yi Zhang, Xiong Chang, Wei Wei, Sun Yong Jian, and Fu Xing Xing), Proceedings of SPIE 2011, San Francisco, CA (2011)
We study the top transmission grating’s improvement on GaN LED light extraction efficiency. We use...
Mode Pattern Analysis of Gallium Nitride-based Laser Diodes (with Sean Jobe, Simeon Trieu, Benafsh Husain, Jason Flickinger, Bei Zhang, Tao Dai, Xiang-Ning Kang, and Guo-Yi Zhang), Proceedings of the International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging (2009)
In this paper, we present an analysis of gallium nitride (GaN) quantum-well (QW) laser diode...
Design Simulation of Top ITO Gratings to Improve Light Transmission for Gallium Nitride LEDs (with Simeon Trieu, Fei Wang, Bei Zhang, Tao Dai, Xiangning Kang, and Guoyi Zhang), Proceedings of the Sixth International Conference on Information Technology: New Generations (2009)
We present simulation results of the indium tin oxide (ITO) top diffraction grating using a...
Light Extraction Improvement of GaN-based Light Emitting Diodes using Patterned Undoped GaN Bottom Reflection Gratings (with Simeon Trieu, Bei Zhang, Tao Dai, Kui Bao, Xiang-Ning Kang, and Guo-Yi Zhang), Proceedings of Gallium Nitride Materials and Devices IV: San Jose, CA (2009)
The Gallium Nitride (GaN) Light-Emitting-Diode (LED) bottom refection grating simulation and results are presented. A...