A widely tunable difference-frequency-generation laser for high-resolution spectroscopy in the 667-865 cm-1range
Type
Conference PaperAuthors
Shakfa, Mohammad KhaledLamperti, Marco
Gotti, Riccardo
Gatti, Davide
Elkhazraji, Ali

Hakimov, Khaiyom
Marangoni, Marco
Farooq, Aamir

KAUST Department
Chemical Kinetics & Laser Sensors LaboratoryClean Combustion Research Center
Mechanical Engineering
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2021-03-05Permanent link to this record
http://hdl.handle.net/10754/669473
Metadata
Show full item recordAbstract
Mid-infrared (MIR) laser sources are used in a number of applications such as remote sensing, air pollution monitoring, combustion diagnostics, and molecular spectroscopy. Here, we present our work on the development of a MIR laser source based on the difference frequency generation (DFG) process between an external-cavity quantum-cascade-laser tunable over 1750-1835 cm-1 (pump source) and a CO2 gas laser tunable over 921-1083 cm-1 (signal source). The DFG process was realized in a nonlinear, orientation-patterned GaAs crystal, and resulted in an idler spectral range between 667-865 cm-1 with a linewidth of ∼2.3 MHz and an output power of up to ∼31 μW. Exploiting the fine tunability of our DFG laser source, we performed high-resolution absorption measurements of ethylene (C2H4) and acetylene (C2H2).Citation
Shakfa, M. K., Lamperti, M., Gotti, R., Gatti, D., Elkhazraji, A., Hakimov, K., … Farooq, A. (2021). A widely tunable difference-frequency-generation laser for high-resolution spectroscopy in the 667–865 cm–1 range. Nonlinear Frequency Generation and Conversion: Materials and Devices XX. doi:10.1117/12.2577534Sponsors
This work was funded by the Office of Sponsored Research (OSR) at King Abdullah University of Science and Technology (KAUST).Publisher
SPIEConference/Event name
Nonlinear Frequency Generation and Conversion: Materials and Devices XX 2021ISBN
9781510641754ae974a485f413a2113503eed53cd6c53
10.1117/12.2577534