ORC Seminar Series Presents:

ORC Seminar Series Presents:
“Fiber Lasers for Frequency Comb Spectroscopy:
Measuring Nature’s Fingerprints
from mid-IR to XUV ”
Dr Ingmar Hartl
DESY, Hamburg Germany
Wednesday, 19th March 2014
Building 46, Rm 2003 (Lecture Theatre B)
Optical frequency combs not only have revolutionized frequency metrology, they also enabled
novel spectroscopic techniques, which can beat traditional spectrometers in scan-speed,
resolution, sensitivity and compactness. This talk will review recent improvements to frequency
combs that were enabled by low-noise, high power femtosecond fiber-laser technology.
Wavelength conversion techniques enable spectroscopy far beyond the emission spectrum of the
laser gain medium. Mid-infrared frequency combs allow broad-band spectroscopy in the
molecular fingerprint region for applications such as breath analysis for cancer detection, the
monitoring of atmospheric trace gases or chemical reaction dynamics. XUV frequency combs
allow for the first time precision spectroscopy in a wavelength regime, where no narrowlinewidth cw-lasers exist.
Ingmar Hartl received his Ph.D. in physics from the University of Munich, Germany, in 1999. After
a postdoctoral fellowship at MIT in Cambridge, Mass., he joined 3D Systems, in Valencia, Calif., as
a Senior Research Scientist. During his tenure at IMRA America, Inc. in Ann Arbor, Mich., his
research interests included extending frequency comb spectroscopy to the mid-infrared and XUV
spectral regions; coherent combination of femtosecond amplifiers, high power and high
repetition rate frequency combs; coherent supercontinuum generation; low phase noise RF
generation; ultrafast fiber oscillators and high power fiber amplifiers; and parametric wavelength
conversion. Since Jan. 2013 Ingmar is head of DESY’s laser division, responsible for DESY’s laser
research, development and operations.
Ingmar has presented more than 30 invited or post-deadline talks at international conferences
and coauthored more than 45 peer-reviewed journal publications, over 100 peer-reviewed
conference contributions, and nine patents. He served as chair of Advanced Solid-State Photonics
(ASSP), Ultrafast Optics (UFO), Europhoton and CLEO and as associate editor of
Optics Express.