The Moscone Center
San Francisco, California, United States
27 January - 1 February 2018
Plenary Events
LASE Plenary Session
Date: Wednesday 31 January 2018
Time: 10:20 AM - 12:35 PM
Location: Room 21 (North Exhibit Level)
10:20 am: Welcome and Opening Remarks
Koji Sugioka, RIKEN (Japan) and Reinhart Poprawe, Fraunhofer-Institut für Lasertechnik (Germany)

10:25 am: Announcement of the 3D Printing, Fabrication, and Manufacturing Best Paper Award
Henry Helvajian, The Aerospace Corp. (United States)

10:30 am: Announcement of the Harold E. Edgerton Award, given to Sterling J. Backus, Kapteyn-Murnane Labs., Inc. (United States)

10:35 to 11:15 am:
Gigahertz Laser Frequency Combs and Dual-Comb Spectroscopy
Ursula Keller, ETH Zurich (Switzerland)

This talk will review our progress on gigahertz frequency combs based on modelocked semiconductor and solid-state lasers, stabilized by external silicon nitride waveguides or PCFs with an f-to-2f interferometer. Novel dual comb modelocked lasers are presented where an intracavity birefringent crystal in an ultrafast semiconductor thin disk laser is used for polarization-duplexing to obtain simultaneous emission of two modelocked beams from the same linear cavity sharing all components. Initially surprising was the observation that the cavity length adjustments to stabilize one polarization did not significantly affect the pulse repetition rate of the other, but at the end we successfully demonstrated dual comb spectroscopy without any active stabilization and with a single laser cavity.

Ursula Keller, a tenured professor of physics at ETH Zurich since 1993, leads the Ultrafast Laser Physics group, and currently also serves as a director of the Swiss NCCR MUST excellence program in ultrafast science since 2010. She received the Physics “Diplom” from ETH Zurich in 1984 and the Ph.D. in Applied Physics from Stanford University, USA in 1989. She was a Member of Technical Staff (MTS) at AT&T Bell Laboratories in New Jersey from 1989 to 1993.
She is the founding president of the ETH Women Professors Forum. She has been a co-founder and board member for Time-Bandwidth Products since 1995 and for GigaTera from 2000 to 2003, a venture capital funded telecom company. Her research interests are exploring and pushing the frontiers in ultrafast science and technology. Awards include the Charles Hard Townes Award of OSA 2015, the LIA Arthur L. Schawlow Award 2013, the ERC advanced grant in 2012, EPS Senior Prize in 2011.

11:15 to 11:55 am:
Optical Lattice Clocks: Reading the 18th Decimal Place of Frequency
Hidetoshi Katori, The Univ. of Tokyo (Japan) and RIKEN (Japan)

The ‘magic frequency’ protocol has made it possible to design a new type of atomic clock based on engineered perturbations. Such ‘optical lattice clock’ allows extremely precise and speedy timekeeping, which targets a fractional uncertainty of 10-18. Recent progress of optical lattice clocks is overviewed. Possible impacts and future applications of optical clocks are discussed, such as testing the fundamental laws of physics, relativistic geodesy that relies on the relativistic time dilation, and possible redefinition of the second.

Hidetoshi Katori was born in Tokyo, Japan. He is a professor, department of applied physics, The University of Tokyo, and a chief scientist, Quantum Metrology Laboratory, RIKEN. He proposed an ‘optical lattice clock’ in 2001. He received The Medal with Purple Ribbon in 2014, and Japan Academy Award in 2015.

11:55 am to 12:35 pm:
Advanced Industrial Laser Systems and Applications
Berthold Schmidt, TRUMPF Photonics Inc. (United States)

Industrial laser systems continue to evolve in terms of power levels, brightness and mode of operation. While CW laser systems drive to more efficient, compact and robust light engines, ultra-short pulse (USP) solid state lasers gain increasing interest from industry due to their higher average power levels, increasing pulse energies and more flexible repetition rates, they can achieve. TRUPMF’s laser systems portfolio starting in 1985 mirrors this general development and is therefore an interesting subject to reflect the path of industrial laser systems from early CO2 lasers to the latest generation of diode pumped USP disk lasers with up to 400W average power at 343nm. Today, our advanced laser families enable novel applications such as EUV light generation, laser lift-off and surface annealing.

Berthold Schmidt is CTO of the business unit TRUMPF Laser Technology and CEO of TRUMPF Photonics Inc., the production center for III-V high power diode lasers and subsystems. Earlier he was Head of Corporate Research establishing the TRUMPF Venture GmbH to promote disruptive technologies in early startup companies. Previously, he was CEO of Intense Ltd. in Scotland, UK and active in various management roles at Bookham, Switzerland. Berthold Schmidt received his PhD from the Technical University in Munich. He graduated from the University in Wuerzburg, Germany and holds a MSc from SUNY Albany. Since 2005 Berthold Schmidt supports the Swiss Commission for Technology and Innovation (CTI) in the field of micro and nano technologies.
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