In this section
@article{Broughton:2025:10.1364/AO.570396,
author = {Broughton, JJ and Allegre, H and Klee, T and Li, Y and Lim, D and Thatte, N and Matthews, MM and Tisch, JWG},
doi = {10.1364/AO.570396},
journal = {Applied Optics},
pages = {7060--7064},
title = {Intensity control of few-cycle laser pulses},
url = {http://dx.doi.org/10.1364/AO.570396},
volume = {64},
year = {2025}
}
TY - JOUR
AB - Controlling the intensity of few-cycle laser pulses—often with fine and continuous tunability—is essential forapplications ranging from strong-field physics and attosecond science to ultrafast spectroscopy, nonlinear optics, and precision material processing. Yet this remains challenging due to their octave-spanning bandwidth and high sensitivity to dispersion. Conventional polarization-based methods typically rely on ultrabroadband optics, which are complex and costly. We demonstrate a robust and broadly applicable approach that enables precise intensity control while avoiding these demanding optical requirements. Applied to an ∼800 nm laser, the method allows pulse energy tuning over a factor of ∼25 while maintaining a sub-6 fs pulse duration after post compression in an argon-filled hollow fiber and chirped mirror system. Validation through high-harmonic generation in krypton reveals clear intensity-dependent harmonic yields across 30−190 TW/cm². This work provides a practical and effective route to stable, tunable few-cycle pulses for both experimental and applied settings.
AU - Broughton,JJ
AU - Allegre,H
AU - Klee,T
AU - Li,Y
AU - Lim,D
AU - Thatte,N
AU - Matthews,MM
AU - Tisch,JWG
DO - 10.1364/AO.570396
EP - 7064
PY - 2025///
SN - 1559-128X
SP - 7060
TI - Intensity control of few-cycle laser pulses
T2 - Applied Optics
UR - http://dx.doi.org/10.1364/AO.570396
UR - https://opg.optica.org/ao/fulltext.cfm?uri=ao-64-24-7060
VL - 64
ER -