北京大学物理学院学术论坛(第十三讲)
[复制链接] 浏览该主题帖Photonic Chip based Frequency Combs
TOBIAS
J. KIPPENBERG
Full Professor
Swiss federal Institute of
Technology in Lausanne(EPFL)
Abstract:
The
development of optical frequency combs, and notably self-referencing, has
revolutionized precision measurements over the past decade, and enabled
counting of the cycles of light. Frequency combs, have enabled dramatic
advances in timekeeping, metrology and spectroscopy. In 2007, it was discovered
that such combs can also be generated using an optical microresonator using
parametric frequency conversion. Importantly, such Kerr combs also enable to
generate dissipative temporal solitons (DKS), which are formally solutions to a
driven dissipative nonlinear Schrödinger equation, termed Lugiato-Lefever
equation–first derived to describe spatial self-organization phenomena. DKS
have unlocked the full potential of Kerr combs enabling a deterministic route
to broadband, and coherent optical frequency combs, whose bandwidth can be
enhanced using soliton broadening phenomena, such as Soliton Cherenkov
Radiation. Such Solitons Kerr combs on a chip have enabled to realize counting
of the cycles of light, realize dual comb spectrometers on a chip, enabled dual
comb based ultrafast ranging, massively parallel coherent communication, and
offered a novel approach to massively parallel FCMW LiDAR. Recent advances
based on the photonic damascene process enable ultra low loss nonlinear
photonic circuits based on silicon nitride (Si3N4), have
enabled ultra-low losses, and direct integration with on chip pump lasers. On
the fundamental side, new and theoretically not previously predicted dynamics
has been observed ranging from formation of soliton crystals, soliton
switching, and new type of breather solitons, and emergent nonlinear dynamics
in arrays of coupled resonators. Soliton Kerr
frequency combs thereby are providing a highly fruitful new playground for
fundamental nonlinear science and applications alike.
Biography:
Tobias J. Kippenberg is Full Professor in the Institute of Physics and
Electrical Engineering at EPFL in Switzerland since 2013 and joined EPFL in
2008 as Tenure Track Assistant Professor. Prior to EPFL, he was Independent Max
Planck Junior Research group leader at the Max Planck Institute of Quantum
Optics in Garching, Germany. While at the MPQ he demonstrated radiation
pressure cooling of optical micro-resonators, and developed techniques with
which mechanical oscillators can be cooled, measured and manipulated in the
quantum regime that are now part of the research field of Cavity Quantum Optomechanics.
Moreover, his group discovered the generation of optical frequency combs using
high Q micro-resonators, a principle known now as micro-combs or Kerr combs.
For his early contributions in these two research fields, he has been
recipient of the EFTF Award for Young Scientists (2011), The Helmholtz Prize in
Metrology (2009), the EPS Fresnel Prize (2009), ICO Award (2014), Swiss Latsis
Prize (2015), as well as the Wilhelmy Klung Research Prize in Physics (2015),
the 2018 ZEISS Research Award and 2020 OSA R. Wood Award. Moreover, he is 1st
prize recipient of the "8th European Union Contest for Young
Scientists" in 1996 and is listed in the Highly Cited Researchers List of
1% most cited Physicists in 2014-2019. He is founder of the startup LIGENTEC
SA, an integrated photonics foundry.