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Fourier Transform Spectroscopy (FTS)

30 July 2023 – 03 August 2023 Munich, Germany


Focuses on the latest advances in instrumentation and applications of FTS to astronomy and astrophysics, atmospheric science and remote sensing, laboratory spectroscopy, analytical chemistry, bio-medicine and a variety of industrial applications.

Fourier transform spectrometers onboard satellites looking toward Earth provide new insights on the planet’s atmosphere, climate and a host of other meteorological and remote sensing applications. Instruments looking out provide a wealth of data targeting galaxies, stars, planets and the cosmic diffuse infrared and microwave background radiation.

Ground-based and airborne FT interferometers explore a variety of topics in physics, geophysics and astrophysics, including solar processes, radiative energy transport in the atmosphere, the geographic distribution of greenhouse gases and air pollutants and spectroscopic studies using the atmosphere as a natural laboratory.

Chip-scale interferometers fabricated using state-of-the-art nanotechnology open up new opportunities for space and industrial applications. Laser frequency combs dramatically improve the resolution and recording speed of Fourier spectrometers. New spectral regions (e.g., VUV or THz) are under exploration with synchrotron radiation. Ultrashort laser pulses expand the territory of FTS to nonlinear and multidimensional spectroscopy. 

This international meeting provides a unique opportunity to discuss many of these exciting developments in a highly interdisciplinary environment.




Fourier Transform Spectroscopy (FTS)
  1. Novel Interferometer Design
    • ​​Imaging FT spectrometers
    • Spatial-spectral interferometry
    • Stationary interferometers
    • Spectrometers on a chip
    • Stationary-wave integrated FT spectrometers
  2. Instrument Design, Scientific Objectives and Measurement Results for Space Missions Utilizing Fourier Transform Spectrometers
  3. Laser Frequency Combs for Fourier Transform Spectroscopy
    • Development of frequency comb sources and instruments on chip and on in novel spectral regions
  4. Dual-Comb Spectroscopy, Frequency-Comb Based Spectroscopy with Michelson Interferometers or Pulse Shapers
    • Applications to laboratory spectroscopy and to sensing
  5. Laboratory Spectroscopy
    • Advanced light sources and measurement techniques for Fourier transform spectrometers
    • FTS at synchrotoron facilities
    • Nano-spectroscopy
    • Nonlinear and multidimensional FTS with ultrashort pulse lasers
  6. Fourier Transform Spectroscopy Applications
    • Industrial process monitoring
    • Spectroscopy
    • Earth and planetary science
    • Atmospheric remote sensing
    • Trace gas detection
    • Astronomy and experimental cosmology
  7. Fourier Transform Spectroscopy Algorithm Developments
    • Spectral and radiometric calibration
    • Instrumental line shape modeling and correction
    • Nonlinearity effects



  • Ian Coddington, National Inst of Standards & Technology, United StatesChair
  • Scott Paine, Harvard-Smithsonian Ctr for Astrophysics, United StatesChair
  • Erik Kretschmer, Karlsruher Institut für Technologie, GermanyProgram Chair
  • Kaoru Minoshima, University of Electro-Communications, JapanProgram Chair
  • Lucile Rutkowski, Institute of Physics of Rennes, FranceProgram Chair
  • Pablo Acedo, Universidad Carlos III de Madrid, Spain
  • Kevin Cossel, NIST Boulder, United States
  • Christoph Englert, US Naval Research Laboratory, United States
  • Sandrine Galtier, Universite Lyon 1, France
  • Dan Herman, IRsweep, Switzerland
  • Takuro Ideguchi, The University of Tokyo, Japan
  • Kirit Karkare, SLAC National Accelerator Laboratory, United States
  • Corneli Keim, Airbus Defence & Space GmbH Library, Germany
  • Amir Khodabakhsh, Radboud Universiteit Nijmegen, Netherlands
  • Isamu Morino, NIES, Japan
  • David Naylor, University of Lethbridge, Canada
  • Akiko Nishiyama, Uniwersytet Mikolaja Kopernika, Japan
  • Piera Raspollini, IFAC-CNR
  • Jenna Samra, Harvard-Smithsonian Ctr for Astrophysics, United States
  • Sheng-Cai Shi, Purple Mountain Observatory, China
  • Joe Taylor, University of Wisconsin-Madison, United States
  • Aldona Wiacek, Saint Mary's University, Canada



Tobias Kippenberg
Swiss Federal Institute of Technology

Hybrid Low Loss Photonic Integrated Circuits: From Chipscale Frequency Combs, Erbium Doped Fiber Amplifiers to Cryogenic Interconnects

Recent advances in attaining ultra low loss highly confining silicon nitride waveguides with loss in the dB-meter range and their heterogeneous integration with MEMS and Lithium Niobate have opened up novel applications that benefit not only from scalable manufacturing, compact form factor and low power, but crucially have now reached a point where the performance is on par and even exceeding that of legacy optical systems. I will describe a range of novel advances, including photonic integrated circuit based frequency agile lasers with fiber laser phase noise, parametric traveling wave amplifiers, Erbium amplifiers on chip, as well as soliton frequency combs, with applications from coherent communications and LiDAR to cryogenic quantum interconnects.

About the Speaker

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 — 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. This discovery unlocked record data transmission rate, which led to the development of new concepts in telecommunications in collaborations with industry. For his early contributions in these two research fields, he was recipient of the EFTF Award for Young Scientists (2011), The Hemholtz Prize in Metrology (2009), the EPS Fresnel Prize (2009), ICO Award (2014), Swiss Latsis Prize (2015), the Wilhelmy Klung Research Prize in Physics (2015), the 2018 ZEISS Research Award and the R. Wood Award (2021). Moreover, he is first-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, 2014 – 2021. He is co-founder of the startup LIGENTEC SA, an integrated photonics foundry; DEEPLIGHT SA, a supplier of advanced laser sources; and LUXTELLIGENCE SA, a thin-film lithium niobate foundry.


Greg Rieker
University of Colorado Boulder, USA

Practical Dual Comb Spectroscopy to Improve Energy Systems: Navigating the Interfaces Between Science, Engineering and Industry

A decade of collaboration on dual comb spectroscopy between scientists, engineers, business-people and industrial end-users is reducing methane leakage across vast areas of oil and gas production and optimizing performance of energy producing chemical reactions.

About the Speaker
Greg Rieker is an Associate Professor and Vogel Family Faculty Fellow in Mechanical Engineering at the University of Colorado Boulder. He leads the Precision Laser Diagnostics Laboratory, which aims to understand and improve energy and atmospheric systems through laser-based sensing. Greg earned a BS from the Missouri University of Science and Technology and MS and PhD degrees from Stanford University. He has affiliations with the National Renewable Energy Laboratory and the National Institute of Standards and Technology. Greg received the NSF CAREER award, the Peter Werle and Hiroshi Tsuji Early Career Scientist Awards and the Colorado Governor’s Award for High-impact Research. He is a senior member of the National Academy of Inventors and co-founder and CTO of LongPath Technologies, Inc.


Special Events

2023 Special Events

IONS+ Munich

Sunday, 30 July 07:00 – 19:00
Hilton Munich Park
Fee: USD 50

IONS+ Munich 2023 is a full-day event for students attending the Optica Sensing Congress. IONS, which started in 2008, affords students the opportunity to build an environment where they can exchange research, hear from luminaries and professionals in the field and enjoy the local culture of the host city. The event is open to all students.


Panel Discussion: Eyes on the Planet – Advances, Limitations and Challenges in Spaceborne Spectrometer Development and Cross-Mission Synergies

Tuesday, 01 August 14:00 – 15:30

Presider: Kevin Turpie, NASA Goddard Space Flight Center, USA

Emiliano Carmona, German Aerospace Center (DLR), Germany
Tobias Storch ,German Aerospace Center (DLR), Germany
Claudia Giardino, National Research Council of Italy, Italy
Jens Nieke, European Space Agency, France
David Thompson, Jet Propulsion Laboratory, USA
Joe Salisbury, University of New Hampshire, USA
Heidi Dierssen, University of Connecticut, USA
Daniel Spengler, ConstellR GmbH, Germany
Sivert Bakken, Norwegian University of Science and Technology, Norway
Keely Roth, Planet Labs PBC, USA
Arnold Dekker, Commonwealth Scientific and Industrial Research Organisation, Australia


Congress Reception

Wednesday, 02 August 18:00 – 19:30
Foyer Mezzanine

This welcome reception is an excellent opportunity to meet or reconnect with friends, colleagues and fellow attendees. 


Panel Discussion - Application of Remote Sensing to Real-World Problems – Strategies, Successes and Challenges

Thursday, 03 August 12:00 – 13:00

Wesley Moses, Naval Research Laboratory, USA
Sanna Kaasalainen, Finnish Geospatial Research Institute, Finland

Heike Bach, Vista GmbH, Germany
Jean-Philippe MacLean, GHGSat, Inc.,Canada
Chris Rampersad, EarthDaily Analytics, Canada
Andrea Vander Woude, NOAA Great Lakes Environmental Research Laboratory, USA
Eyal Ben-Dor, Tel Aviv University, Israel
Arnold Dekker, Commonwealth Scientific and Industrial Research Organisation, Australia


Congress Farewell

Thursday, 03 August 16:30 – 17:00
Foyer Mezzanine

Please join your fellow congress attendees for a farewell toast. 


CANCELLED: Tour of Spaten-Franziskaner-Bräu GmbH

Friday, 04 August 10:30 – 14:30
Spaten-Franziskaner-Bräu GmbH

***This event has been cancelled***

Enjoy a tour of Spaten-Franziskaner-Bräu GmbH with your fellow congress attendees. Discover the art of brewing and immerse yourself in the exciting history of the Spaten, Franziskaner and Löwenbräu breweries. Transportation from the Hilton Munich Park Hotel, beer and snacks are included.

A EUR 65 fee is required to reserve your spot on the tour. 


Image for keeping the session alive