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Publications by
Prannay Balla

All publications of HI Jena

2021

A.-L. Viotti, S. Alisauskas, A. Bin Wahid, P. Balla, N. Schirmel, B. Manschwetus, I. Hartl, and C. Heyl
60 fs, 1030nm FEL pump--probe laser based on a multi-pass post-compressed Yb:YAG source
Journal of Synchrotron Radiation 28, 36 (2021)

Abstract: This paper reports on nonlinear spectral broadening of 1.1ps pulses in a gas-filled multi-pass cell to generate sub-100fs optical pulses at 1030nm and 515nm at pulse energies of 0.8mJ and 225\textdollar µ \textdollar J, respectively, for pump--probe experiments at the free-electron laser FLASH. Combining a 100kHz Yb:YAG laser with\textasciitilde 180W in-burst average power and a post-compression platform enables reaching simultaneously high average powers and short pulse durations for high-repetition-rate FEL pump--probe experiments.

2020

M. Seidel, P. Balla, T. Binhammer, M. Frede, G. Arisholm, L. Winkelmann, I. Hartl, and C. Heyl
Hybridizing Multi-pass and Multi-plate Bulk Compression
EPJ Web of Conferences 243, 21001 (2020)

Abstract: With the advent of ultrafast Yb-ion based disk, slab and fibre lasers, nonlinear pulse compression methods became indispensable for the generation of high average power sub-100 fs pulses. In particular, spectral broadening in Herriott-type multi-pass cells (MPC) has been established as a novel tool for pulse compression in the 5 – 100 MW peak power range where neither solid-core fibre nor hollow-core capillaries work efficiently. The operation in the critical self-focusing regime becomes feasible through repetitive refocusing of the cell mirrors. Analogously, the multi-plate approach , which has mainly been used for broadband continuum generation, relies on the nonlinear refocusing of the Kerr media . By introducing the hybridization of both methods, we demonstrate compression factors up to 14. To the best of our knowledge this exceeds all single-stage compression factors achieved with bulk-based spectral broadening to date.

A.-L. Viotti, S. Alisauskas, P. Balla, A. Wahid, I. Sytcevich, C. Guo, L. Silletti, A. Cartella, H. Tavakol, U. Grosse-Wortmann, A. Schönberg, M. Seidel, B. Manschwetus, T. Lang, A. Trabattoni, F. Calegari, A. Couairon, A. L\'Huillier, C. Arnold, I. Hartl, and C. Heyl
Post-compression of high average power picosecond pulses for few cycle generation and FEL pump-probe experiments
EPJ Web of Conferences 243, 21002 (2020)
No abstract availableLinkBibTeX
P. Balla, A. B. Wahid, I. Sytcevich, C. Guo, A.-L. Viotti, l. Silletti, A. Cartella, S. Alisauskas, H. Tavakol, U. Grosse-Wortmann, A. Schönberg, M. Seidel, A. Trabattoni, B. Manschwetus, T. Lang, F. Calegari, A. Couairon, A. LHuillier, C. Arnold, I. Hartl, and C. M. Heyl
Post-compression of picosecond pulses into the few-cycle regime
Optics Letters 45, 2572 (2020)

Abstract: In this work, we demonstrate post-compression of 1.2 picosecond laser pulses to 13 fs via gas-based multipass spectral broadening. Our results yield a singlestage compression factor of about 40 at 200 W in-burst average power and a total compression factor >90 at reduced power. The employed scheme represents a route towards compact few-cycle sources driven by industrial-grade Yb:YAG lasers at high average power.

P. Balla, A. B. Wahid, I. Sytcevich, C. Guo, A.-L. Viotti, L. Silletti, A. Cartella, S. Alisauskas, H. Tavakol, U. Grosse-Wortmann, A. Schönberg, M. Seidel, B. Manschwetus, T. Lang, A. Trabattoni, F. Calegari, A. Couairon, A. L'Huillier, C. L. Arnold, I. Hartl, and C. M. Heyl
Post-Compression of Picosecond Pulses to Four Optical Cycles via Multi-Pass Spectral Broadening
(2020)

Abstract: We demonstrate post-compression of 1.2 ps pulses to the few-cycle regime via multi-pass spectral broadening. We achieve compression factors of 40 via single and >90 via dual stage compression employing mJ pulses.

P. Balla, A. B. Wahid, I. Sytcevich, C. Guo, A.-L. Viotti, L. Silletti, A. Cartella, S. Alisauskas, H. Tavakol, U. Grosse-Wortmann, A. Schönberg, M. Seidel, B. Manschwetus, T. Lang, A. Trabattoni, F. Calegari, A. Couairon, A. L'Huillier, C. L. Arnold, I. Hartl, and C. M. Heyl
Post-compression of picosecond pulses to four optical cycles
(2020)

Abstract: We report post-compression of 1.2 ps pulses into the few-cycle regime via multi-pass spectral broadening. We achieve compression factors of 40 in single and 93 in a dual stage scheme using a compact setup.

P. Balla, A. Wahid, I. Sytcevich, C. Guo, A. Schonberg, A.-L. Viotti, L. Silletti, A. Cartella, S. Alisauskas, H. Tavakol, U. Grosse-Wortmann, M. Seidel, B. Manschwetus, T. Lang, F. Calegari, A. Couairon, A. L'Huillier, C. Arnold, I. Hartl, and C. Heyl
Factor 40 Pulse Post-Compression of 200 W in-Burst Average Power Pulses via Single-Stage Multi-Pass Spectral Broadening
(2020)
No abstract availableLinkBibTeX