Ultrafast and highly efficient resonant cavity enhanced photodiodes
Proceedings of SPIE - The International Society for Optical Engineering
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/27493
In this talk, we will review our research efforts on resonant cavity enhanced (RCE) high-speed high-efficiency photodiodes (PDs) operating in the 1st and 3rd optical communication windows. Using a microwave compatible planar fabrication process, we have designed and fabricated GaAs and InGaAs based RCE photodiodes. For RCE GaAs Schottky type photodiodes, we have achieved peak quantum efficiencies of 50% and 75% with semi-transparent (Au) and transparent (indium-tin-oxide) Schottky layers respectively. Along with 3-dB bandwidths of 50 and 60 GHz, these devices exhibit bandwidth-efficiency (BWE) products of 25 GHz and 45 GHz respectively. By using a postprocess recess etch, we tuned the resonance wavelength of an RCE InGaAs PD from 1605 to 1558 nm while keeping the peak efficiencies above 60%. The maximum quantum efficiency was 66% at 1572 nm which was in good agreement with our theoretical calculations. The photodiode had a linear response up to 6 mW optical power, where we obtained 5 mA photocurrent at 3 V reverse bias. The photodetector had a temporal response of 16 psec at 7 V bias. After system response deconvolution, the 3-dB bandwidth of the device was 31 GHz, which corresponds to a bandwidth-efficiency product of 20 GHz.
- Conference Paper 
Showing items related by title, author, creator and subject.
Alkis, S.; Chowdhury F.I.; Alevli, M.; Dietz, N.; Yalizay, B.; Aktürk, S.; Nayfeh, A.; Okyay, A., K. (Institute of Physics Publishing, 2015)In this work, we present a hybrid indium nitride particle/polycrystalline silicon solar cell based on 230 nm size indium nitride particles (InN-Ps) obtained through laser ablation. The solar cell performance measurements ...
Power conversion and luminous efficiency performance of nanophosphor quantum dots on color-conversion LEDs for high-quality general lighting Erdem, T.; Nizamoglu, S.; Demir, H. V. (2012)For high-quality general lighting, a white light source is required to exhibit good photometric and colorimetric performance along with a high level of electrical efficiency. For example, a warm white shade is desirable ...
On the triplet distribution and its effect on an improved phosphorescent organic light-emitting diode Liu, S.W.; Divayana, Y.; Abiyasa, A.P.; Tan, S.T.; Demir, H. V.; Sun X.W. (2012)We reported phosphorescent organic light-emitting diodes with internal quantum efficiency near 100 with significantly reduced efficiency roll-off. It was found that the use of different hole transporting layer (HTL) affects ...