Dr. Mihail M. Dumitrescu

>25 years of compound semiconductor optoelectronic device R&D, especially compound semiconductor laser development: new device concepts; modelling and simulation tools; design and analysis (epilayer structure with doping profile, transverse and longitudinal device structure, surface features, contact structures); coordination of solid-source MBE growths; development of device process flows and supervision of device processing; coordination of characterization; problem-solving and characteristics improvement.

>200 publications in international scientific journals and conference proceedings with referee practice.

24 research projects at national level (6 coordinated) + 14 research projects at international level (5 coordinated):
* Sub-Megahertz Linewidth Laser for Fundamental Physics Missions (EARLY),European Space Agency (2014-2017)
* Development of low-cost technologies for the fabrication of high-performance telecommunication lasers (DeLight), EU FP7 (2008-2012)
* Development of narrowband semiconductor DFB & DBR lasers, European Space Agency GSTP-4 (2008-2011)
* Low-cost 1.3 µm sources for FAST ACCESS technologies (FAST ACCESS), EU FP6 (2004-2008)
* High-power red laser development (READY), Coherent Inc. (1997-2000)

11 different courses taught, 37 MSc and 7 PhD theses supervised.

Main research interests:
* Epilayer structure design and optimization (tested designs for 630-670, 780, 808, 852, 894, 980, 1064, 1180, and telecom bands
* Optimized ridge waveguide designs
* DFB and DBR lasers with surface gratings
* MOPA lasers with surface gratings
* High-speed directly modulated lasers (including advanced designs for >40 Mb/s)
* Narrow linewidth lasers (0.01-0.5 MHz)
* High-power lasers (1-5 W)
* Multi-wavelength hybrid lasers (2, 4, 8, 16 channels with spacing down to 100 GHz)
* RC-LED and VCSELs with tested designs at 650-670, 880, 1300 and 1550 nm
* Semiconductor optical amplifiers