3 papers
physics.chem-ph2025
Formation of HNC and HCN isomers in molecular plasmas revealed by frequency comb and quantum cascade laser spectroscopy
Ibrahim Sadiek, Simona Di Bernardo, Uwe Macherius +1
Hydrogen cyanide (HCN) is a well-known product in combustion, astrophysical, and plasma environments, but its isomer, hydrogen isocyanide (HNC), remains unexplored in molecular pla…
physics.chem-ph2024
Precision frequency comb spectroscopy of the NO, NNO, NNO, and NO isotopocules in the 3300-3550 cm range
Adrian Hjältén, Ibrahim Sadiek, Aleksandra Foltynowicz
Nitrous oxide is a long-lived greenhouse gas. Its isotopic composition provides valuable insights into sources and sinks, and about the mechanism of formation. A major challenge in…
physics.optics2024
An air-spaced virtually imaged phased array with 94 MHz resolution for precision spectroscopy
Ibrahim Sadiek, Norbert Lang, Jean-Pierre H. van Helden
We report on an air-spaced virtually imaged phased array (VIPA) spectrometer that resolves the modes of a mid-infrared frequency comb with a repetition rate of 250 MHz, without an…