Mid-IR frequency combs: generation and applications
The broadband and coherent nature of frequency combs, both in frequency (a manifold of equally spaced narrow spectral
lines) and in time (a strictly periodic train of pulses with stable carrier-envelope phase), has allowed a
revolution in precision metrology and high-resolution broadband spectroscopy. The goal is ...
Dual comb spectroscopy
Frequency combs in the molecular 'fingerprint' portion of the spectrum (2-10 Âµm) have demonstrated great potential
for spectroscopy. Especially attractive is dual-comb Fourier transform spectroscopy where full advantage is taken of ...
Photonic THz wave generation
Photonic generation of THz waves via down conversion in electro-optic crystals is an attractive (thanks to the
progress in developing compact near-IR optical sources) but inefficient in comparison to mid-IR (because of the frequency cubed scaling
factor) process. We develop photonic THz sources for ...
The ability to identify material under the tip of an atomic force microscope (AFM) is one of the 'Holy Grails'
of scanning probe microscopy. While AFM can measure mechanical, electrical, magnetic and thermal properties of
materials, it has lacked the robust ability to chemically characterize unknown materials. Infrared spectroscopy is ...