TY - JOUR
T1 - Spectral vector beams for high-speed spectroscopic measurements
AU - Kopf, Lea
AU - Deop Ruano, Juan R.
AU - Hiekkamäki, Markus
AU - Stolt, Timo
AU - Huttunen, Mikko J.
AU - Bouchard, Frédéric
AU - Fickler, Robert
N1 - Funding Information:
Acknowledgment. The authors thank Lauri Salmela for information and data regarding the supercontinuum, and Nikolai V. Tkachenko for fruitful discussions. Authors Lea Kopf, Markus Hiekkamäki and Robert Fickler acknowledge the support of the Academy of Finland through the Competitive Funding to Strengthen University Research Profiles. Lea Kopf also acknowledges support from the Vilho, Yrjö and Kalle Väisälä Foundation of the Finnish Academy of Science and Letters. Markus Hiekkamäki acknowledges support from the Magnus Ehrnrooth Foundation through its graduate student scholarship. Timo Stolt acknowledges the Jenny and Arttu Wihuri Foundation for a Ph.D. fellowship. Frédéric Bouchard acknowledges support from the National Research Council’s High Throughput Secure Networks challenge program and the Joint Centre for Extreme Photonics.
Publisher Copyright:
©2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
PY - 2021
Y1 - 2021
N2 - Structuring light in multiple degrees of freedom has become a powerful approach to create complex states of light for fundamental studies and applications. Here, we investigate the light field of an ultrafast laser beam with a wavelengthdependent polarization state, which we terma spectral vector beam.We present a simple technique to generate and tune such structured beams and demonstrate their spectroscopic capabilities. By measuring only the polarization state using fast photodetectors, it is possible to track pulse-To-pulse changes in the frequency spectrum caused by, e.g., narrowband transmission or absorption. In our experiments,we reach readout rates of around 6 MHz, which is limited by our technical ability to modulate the spectrum and can in principle reach GHz readout rates. In simulations we extend the spectral range to more than 1000 nm by using a supercontinuum light source, thereby paving the way to various applications requiring high-speed spectroscopic measurements.
AB - Structuring light in multiple degrees of freedom has become a powerful approach to create complex states of light for fundamental studies and applications. Here, we investigate the light field of an ultrafast laser beam with a wavelengthdependent polarization state, which we terma spectral vector beam.We present a simple technique to generate and tune such structured beams and demonstrate their spectroscopic capabilities. By measuring only the polarization state using fast photodetectors, it is possible to track pulse-To-pulse changes in the frequency spectrum caused by, e.g., narrowband transmission or absorption. In our experiments,we reach readout rates of around 6 MHz, which is limited by our technical ability to modulate the spectrum and can in principle reach GHz readout rates. In simulations we extend the spectral range to more than 1000 nm by using a supercontinuum light source, thereby paving the way to various applications requiring high-speed spectroscopic measurements.
U2 - 10.1364/OPTICA.424960
DO - 10.1364/OPTICA.424960
M3 - Article
AN - SCOPUS:85108423199
SN - 2334-2536
VL - 8
SP - 930
EP - 935
JO - Optica
JF - Optica
IS - 6
ER -