The Moscone Center
San Francisco, California, United States
2 - 7 February 2019
Plenary Events
LASE Plenary Session
Date: Monday 4 February 2019
Time: 3:30 PM - 5:40 PM
3:30 PM - 3:35 PM: Welcome and Opening Remarks
Beat Neuenschwander, Berner Fachhochschule Technik und Informatik (Switzerland) and Xianfan Xu, Purdue Univ. (United States)

3:35 PM - 3:40 PM: Announcement of the 3D Printing, Fabrication, and Manufacturing Best Paper Award
Henry Helvajian, The Aerospace Corp. (United States)

3:40 PM - 4:20 PM: Cassini’s Grand Finale: Going Out in a Blaze of Glory

Earl H. Maize, Jet Propulsion Lab. (United States)

The Cassini spacecraft ended its 20-year voyage of discovery with a fiery plunge into Saturn’s atmosphere on Sept. 15, 2018. We will discuss the engineering and scientific rationale for the mission’s final scenario and some of the complexities of an entirely new mission for an aging spacecraft. We will also present highlights from the many amazing findings from the spacecraft’s 13 years of exploration in the Saturn system.

Dr. Earl H. Maize is the Program Manager of the NASA Cassini Mission, Jet Propulsion Lab., a mission that began exploring the Saturn system in 2004 and recently concluded with a spectacular plunge into Saturn’s atmosphere in September 2017. He has worked at the Jet Propulsion Laboratory for the past 34 years. He previously worked on the Galileo mission to Jupiter and held management positions in System Engineering and Guidance, Navigation and Control.

4:20 PM - 5:00 PM: Quarter Century Development of Laser Peening and Recent Strides toward Expansion of Applications

Yuji Sano, Japan Science and Technology Agency (Japan)

Underwater laser ablation with nanoseconds lasers generates high-pressure plasma exceeding GPa, and can be used as a hammer to forge the surface of most metals. This technology is known as laser peening (LP) and has been used in aeronautical and nuclear industries since the late 1990s. Most recently, we have developed a novel LP process without water by using a femtosecond laser, which extends the application to integrated systems with mechanics and electronics incompatible with aqueous environment, and even to components in space. Various applications would be realized by enhancing usability through miniaturization and simplification. In this context, we have developed ultra-compact handheld microchip lasers with passive Q-switch generating sub-nanosecond pulses, which paves the way to a wide range of new applications beyond the horizons posed by current laser systems.

Dr. Yuji Sano is a Program Manager (PM) of ImPACT (Impulsing Paradigm Change through Disruptive Technologies program) under the cabinet office of the Japanese government. He is managing R&D activities for laser wakefield acceleration of electrons and high-power solid-state pulsed lasers. Until designated as the PM in 2014, he had served Toshiba Corporation and developed laser applications especially laser peening since 1994. From 2008 to 2014, he concurrently served as a Program Officer of Photon Frontier Network supported by the government.

5:00 PM - 5:40 PM: High Power Laser Diodes: Improvements in Power, Efficiency, and Brilliance

Günther Tränkle, Ferdinand-Braun-Institut (Germany)

GaAs-based high-power diode lasers are the world’s most efficient light sources and generate the optical energy for the largest and fastest growing laser market: material processing. The performance of these key components is improving dramatically, driven by advances in material quality, process technology and design capability. FBH’s studies to improve the understanding of the physics and material properties that limit performance are an essential part of this development. An overview will be presented, detailing how power, efficiency and beam quality have been improved over the past 20 years, and showing the path to further performance scaling.

Prof. Dr. Günther Tränkle received a PhD in physics in 1988 (Univ. Stuttgart). From 1988-94 he was a Postdoc at TU München. In 1995, he was Department Head at Fraunhofer-IAF in Freiburg, and in 1996, he became Director of Ferdinand-Braun-Institute in Berlin. Since 2002 he is Full Professor at TU Berlin for microwaves and optoelectronics. Additionally, in 2013-17 he was Acting Director of Leibniz-Institute for Crystal Growth in Berlin.
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