Plenary Event
Co-located: WSOF Plenary Session I & II-Tuesday
8 April 2025 • 11:00 - 14:20 CEST | Zenit
11:00 to 11:45
WSOF Plenary Session I
Welcome and Introduction
Pavel Peterka, Institute of Photonics and Electronics, Czech Academy of Sciences (Czech Republic)
Alexis Mendez, MCH Engineering LLC (United States)
2025 WSOF Chairs
11:00 to 11:45
Fibers for high pulse energy fiber lasers
Clémence Jollivet
Coherent Inc. (United States)
Dr. Clémence Jollivet is Senior Director & General Manager at Coherent Corp., a global leader in optics and photonics. She oversees the operations, strategy, and technical innovation of the Specialty Optical Fiber site, formerly Nufern, which specializes in high-performance fiber solutions for industrial, communications, navigation, and medical applications.
Previously, Dr. Jollivet held key leadership roles in Engineering and Product Development. As Engineering Manager since 2018, she led multi-disciplinary teams and played a pivotal role in the development of next-generation fiber platforms.
Dr. Jollivet earned her Ph.D. in Optics & Photonics from the College of Optics & Photonics (CREOL, UCF) in 2014, where her research focused on specialty fiber lasers and novel fiber devices. She is an active contributor to the photonics community, serving on technical committees for SPIE and Optica conferences. She has authored multiple peer-reviewed publications, holds several patents, and is committed to advancing photonics innovation while mentoring the next generation of industry leaders.
13:35 to 14:20
WSOF Plenary Session II
Fiber regenerative amplifiers for femtosecond pulse generation
Frank Wise
Cornell Univ. (United States)
Nonlinear effects due to high-intensity light confined to small fiber cores limit the performance of short-pulse fiber lasers. A common technique for reducing nonlinear effects and scaling the performance of fiber lasers to higher power is to enlarge the fiber core. However, increasing the transverse dimensions of a fiber eventually introduces multiple transverse modes, which present a new set of challenges for ultrashort pulse generation: multimode amplifiers produce speckled, low-quality beams, and amplified spontaneous emission is difficult to suppress.
Frank Wise received a BS in Engineering Physics from Princeton University, an MS in Electrical Engineering from the University of California at Berkeley, and a PhD in Applied Physics from Cornell University. Since receiving the PhD in 1988, he has been on the faculty in Applied Physics at Cornell.
WSOF Plenary Session I
Welcome and Introduction
Pavel Peterka, Institute of Photonics and Electronics, Czech Academy of Sciences (Czech Republic)
Alexis Mendez, MCH Engineering LLC (United States)
2025 WSOF Chairs
11:00 to 11:45
Fibers for high pulse energy fiber lasers
Clémence Jollivet
Coherent Inc. (United States)
Dr. Clémence Jollivet is Senior Director & General Manager at Coherent Corp., a global leader in optics and photonics. She oversees the operations, strategy, and technical innovation of the Specialty Optical Fiber site, formerly Nufern, which specializes in high-performance fiber solutions for industrial, communications, navigation, and medical applications.
Previously, Dr. Jollivet held key leadership roles in Engineering and Product Development. As Engineering Manager since 2018, she led multi-disciplinary teams and played a pivotal role in the development of next-generation fiber platforms.
Dr. Jollivet earned her Ph.D. in Optics & Photonics from the College of Optics & Photonics (CREOL, UCF) in 2014, where her research focused on specialty fiber lasers and novel fiber devices. She is an active contributor to the photonics community, serving on technical committees for SPIE and Optica conferences. She has authored multiple peer-reviewed publications, holds several patents, and is committed to advancing photonics innovation while mentoring the next generation of industry leaders.
13:35 to 14:20
WSOF Plenary Session II
Fiber regenerative amplifiers for femtosecond pulse generation
Frank Wise
Cornell Univ. (United States)
Nonlinear effects due to high-intensity light confined to small fiber cores limit the performance of short-pulse fiber lasers. A common technique for reducing nonlinear effects and scaling the performance of fiber lasers to higher power is to enlarge the fiber core. However, increasing the transverse dimensions of a fiber eventually introduces multiple transverse modes, which present a new set of challenges for ultrashort pulse generation: multimode amplifiers produce speckled, low-quality beams, and amplified spontaneous emission is difficult to suppress.
Operation of a fiber regenerative amplifier in a single transverse mode despite the use of highly-multimode gain fiber was recently demonstrated, and initial results include a short-pulse fiber source with an unprecedented combination of features: high-gain (> 55 dB) amplification of transform-limited femtosecond pulses (300 fs) and generation of high-quality (M^2≤1.3) beams.
The use of step-index gain fiber provides a power-scalable approach to short-pulse amplification. The potential of this approach to achieve high performance will be discussed along with new opportunities for nonlinear and multimode (spatiotemporal) pulse-shaping.
Frank Wise received a BS in Engineering Physics from Princeton University, an MS in Electrical Engineering from the University of California at Berkeley, and a PhD in Applied Physics from Cornell University. Since receiving the PhD in 1988, he has been on the faculty in Applied Physics at Cornell.