Pulse Shaping Increases CARS Resolution
Coherent anti-Stokes Raman spectroscopy (CARS) is becoming the technique of choice for femtosecond time-resolved studies, say researchers at
Weizmann Institute of Science in Rehovot, Israel, but its selectivity suffers because of the large bandwidth of its pulses. Now the researchers have used quantum coherent control to extract 15-cm
-1resonant signals from a probe pulse with a 120-cm
-1 bandwidth.
Reporting in the Feb. 11 issue of
Physical Review Letters, the team describes how it employed a liquid crystal spatial light modulator to perform Fourier transform pulse shaping on the 810-nm output from a mode-locked Ti:sapphire laser that served as the probe. Broadening the excitation and probe pulses, the group suggests, should enable even higher-resolution spectral data.
LATEST NEWS
- CLEO Heads to the East Coast
Apr 29, 2024
- Laser-Based Gas Analyzer Developed to Detect Air Pollution
Apr 29, 2024
- Qubits Could be Stored in Flash-Like Memory
Apr 29, 2024
- Exail Signs LLNL Contract, Partners with Eelume
Apr 26, 2024
- Menlo Moves U.S. HQ: Week in Brief: 4/26/2024
Apr 26, 2024
- Optofluidics Platform Keys Label-, Amplification-Free Rapid Diagnostic Tool
Apr 25, 2024
- DUV Lasers Made with Nonlinear Crystals Enhance Lithography Performance
Apr 25, 2024
- Teledyne e2v, Airy3D Collaborate on 3D Vision Solutions
Apr 24, 2024