Jan. 2017

Congratulations to Xuechao Yu and Youde Shen on their obtaining the prestigious award of “Chinese Government Award for Outstanding Self-financed Student Abroad”.

Nov. 2016

Our work on "Designer Multimode Localized Random Lasing in Amorphous Lattices at Terahertz Frequencies" was published in ACS Photonics.

June. 2016

Congratulations to Xuechao Yu on his obtaining of Ph.D. degree!

Our work on "Lateral black phosphorene P–N junctions formed via chemical doping for high performance near-infrared photodetector" was published in Nano Energy. It was highlighted as the cover image.

Jan. 2016

Our invited review paper on "Broadly tunable single-mode mid-infrared quantum cascade lasers" was selected for "Highlights of 2015" by Journal of Optics ("topical reviews").

Dec. 2015

Congratulations to Youde Shen on his obtaining of Ph.D. degree!




Director, Centre for OptoElectronics and Biophotonics (OPTIMUS)
Associate Professor

School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences
Nanyang Technological University

Phone: (+65) 6790 5431 
Office: S1-B1b-52


Welcome to professor Wang Qijie’s research group in School of Electrical and Electronic Engineering, and School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore.

The main interests of our research are broadly in optoelectronic technologies from fundamental studies to various applications, specifically on investigating theoretically and experimentally fundamental light-matter interactions in the infrared regimes in new materials and new designs, and developing novel photonic and optoelectronic devices and systems.

Most of the spectrum windows in the electromagnetic spectrum have been well developed, leading to important applications that have changed our life significantly. However, the mid- and far-infrared (Terahertz) regime, ~3-300 micrometer, still remains the least developed spectrum window mainly due to the lack of compact, electrically-driven, high performance photonic and optoelectronic devices. This region is called the molecular fingerprint region, as molecules have unique and strong absorption features which are related to the vibration modes of oscillations. Thus, obtaining such high performance photonic/optoelectronic devices and systems in this region could enable a broad range of applications including but not limited to sensing & spectroscopy, biomedical sciences, communications, quality control of food, environmental monitoring and process control, imaging and security screening, defense, etc.

In particular, we are developing innovative
1) Mid- and far-infrared lasers (quantum cascade lasers & fiber lasers),
2) Graphene optoelectronic devices (waveguides, detectors, and modulators), and
3) Infrared plasmonic and metamaterial devices.

We are always looking for strongly motivated both postdoc and Ph.D researchers dedicated to the cutting edge research in laser physics and engineering, nanotechnology, and nano-optics/photonics. Interested candidates please send your CV to Shortlisted candidates will be contacted.

Our collaborators:


Last edit on July 06 2016