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Research in M.H.Z group

Our research is focused on physics and applications of high-Q optical microresonators (with emphasis on Whisperin-Gallery microresonators). These resoantors have
been subject of intensive research during the past decade owing to their unique features. Enabling long photon lifetime in a small volume is the most important characteristic
of these resonators. Long photon lifetime translates into long interaction length and large power build-up factor while small volume results in high intensity. As a result using these
devices one can reduce the power and the volume required for various interactions (i.e. optomechanical, electro-optical, Raman, Brillouin, laser generation,...) by orders of magnitude.
High-Q microresonators are versatile devices with a large variety of applications from optical communication and microwave-photonics to sensing and metrology.
These devices have been used as building blocks for high-Q optical filters, optical modulators, photonic microwave receivers, optoelectronic oscillators, high sensitivity chemical and
biological sensors, small narrow linewidth lasers, and recently optomechanical oscillators. In addition to their versatile engineering application, high-Q microresonators are also used
as platforms for fundamental research in light-matter interaction. For example ultra-high-Q silica microtoroid resonator (a special type of high-Q circular microresonator) is a unique
device for exploring the physics of optomechanical  interaction, nonlinear optical phenomena and cavity quantum electrodynamics (cQED).

            Dr Hossein-Zadeh is the recipient of National Science Foundation (NSF) CAREER AWARD (2011)
A. Research areas:
     1) Photonic biose
     2) Optomechanical oscillation
     3) Fabrication of high-Q Near-IR Whispering-Gallery Mode (WGM) microresonators
     4) Mid-IR WGM microresonators and lasers   
     5) Resonant microwave photonic devices and systems
     6) Physics and properties of high-Q optical microresonators
     7) Fluidic WGM optical microresonators 

 B. Previous projects and research topics


Our research is funded by:

National Science Foundation      Airforce Office of Scientifc Research      Office of Vice President for Research

and supported by :


Center for Integrated Nanotechnologies            Los Alamos National Laboratory 
Current funding:
1-NSF CMMI-DCSD (co-PI): "Dynamics of Coupled Heterogenous Oscilllators with Applicaitons to Biological Systems"
2-UNM OVPR (PI): Junior Faculty Collaborative Research Grant
Past funding:
1-AFOSR (co-PI): Optoelectronic Research Center at UNM CHTM (block grant)
2-NSF NUE (co-PI): "An Integrated Multidisciplinary Nanotechnology Undergraduate Education Program at the University of New Mexico"
3-NSF EPMD (PI): "Compact Narrow-linewidth Microresonator- Based Mid-IR Sources for Ultra-Sensitive Molecular Detection" 
4-NSF EPDT CAREER (PI): "Radiation Pressure Based Optomechanical RF Signal Processing and Sensing"