Multi-pass cells: A disruptive technology in the field of ultrafast optics


  • Esmerando Escoto Deutsches Elektronen-Synchrotron DESY, Germany



Multi-pass cells (MPCs) have been instrumental in enabling the generation of high average power ultrashort laser pulses with bandwidths much beyond what can be achieved by common laser gain media. MPCs typically depend on self-phase modulation (SPM) to expand the available wavelength range of a laser pulse. However, a large amount of SPM on its own can cause the beam’s spatial profile to worsen, aside from adding unwanted higher-order spectral phase that could be present in the broadened spectrum. In this talk, I will discuss how MPCs have been used to avoid these problems [Optica 9, 197 (2022)], and how MPCs could be scaled further towards higher pulse compression ratios through cascading [J. Opt. Soc. Am. B 39, 1694 (2022)]. I will also present recent experimental results, showing how MPCs have made new parameter regimes accessible, and different opportunities with MPCs that could be reached in the near future.

About the Speaker

Esmerando Escoto, Deutsches Elektronen-Synchrotron DESY, Germany

Esmerando Escoto received the B.S. and M.S. degrees in Physics from the University of the Philippines Diliman, Quezon City, Philippines, in 2014 and 2016, respectively. He was an instructor with the National Institute of Physics, Philippines for two years. He obtained his Ph.D. degree from the Humboldt University of Berlin, through his research work in the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin, Germany. He is now a post-doctoral researcher at the Deutsches Elektronen-Synchrotron DESY in Hamburg, Germany. His research interests include ultrashort laser pulse characterization and post-compression, and phase retrieval algorithms.



Article ID



Invited Presentations



How to Cite

E Escoto, Multi-pass cells: A disruptive technology in the field of ultrafast optics, Proceedings of the Samahang Pisika ng Pilipinas 40, SPP-2022-INV-2C-01 (2022). URL: