EPFL/STI/IEL/K-Lab
Expert in cavity optomechanics, monolithic optical frequency comb, ultra-sensitive biophysical recognition
Tobias Kippenberg
EPFL
MicroComb
Chip-scale optical frequency combs for near and mid-infrared

Project Description

Optical frequency combs have revolutionized optical frequency metrology in just a few years. They have made it possible to directly count light field oscillations of several 100 million million cycles per second and they have been recognized and honored by the highest distinction possible in science: The 2005 Nobel-Prize to T.W. Hansch (MPQ Germany) and J. Hall (JILA, USA). Measuring optical frequencies is not only of critical importance in fundamental science and atomic clocks but moreover is of increasing importance in technology. Frequency combs have enabled advances in other areas, such as gas sensing, Fourier transform spectroscopy or range-finding and astronomy. However a major obstacle has been the lack of integration; it has been impossible to create compact on chip comb sources.  The aim of this project is to build a planar optical frequency comb generator on a chip using CMOS compatible processing. 

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Notable publications

Photodiode Response in a CH3NH3PbI3/CH3NH3SnI3 Heterojunction

ACS Applied Materials & Interfaces

Optically switched magnetism in photovoltaic perovskite CH3NH3(Mn:Pb)I3

Nature Communications

Cyan titania nanowires: Spectroscopic study of the origin of the self-doping enhanced photocatalytic activity

Catalysis Today

Terabit/s data transmission using optical frequency combs
Koos, C., Leuthold, J., Freude, W., Kippenberg, T.J., Pfeifle, J., Weimann, C., Hartinger, K., Brasch, V., Herr, T., Holzwarth, R., Hillerkuss, D., Schmogrow, R.
Proceeding SPIE 2013


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Posters from 2012


Planar SiN frequency comb generators for spectroscopy and communication
Riemensberger, Herr, Hartinger, Brasch, Holtzwarth, Kippenberg

Posters from 2011


Planar SiN based optical frequency comb generators for high capacity telecommunications
Johann Riemensberger, Klaus Karl Hartinger, Tobias Herr, Tobias J. Kippenberg