Exhaled breath contains small molecules and complex volatile organic compounds (VOCs)
such as H2O, CO2, NO, NH3, ketones, aldehydes, alcohols, and hydrocarbons. Analysis of …

We have developed a direct frequency comb spectroscopy instrument, which we have tested
on Saccharomyces cerevisiae (baker's yeast) by measuring its CO_2 output and production …

At low pressures, molecular spectra typically exhibit a large number of very narrow
absorption features spread across a relatively wide spectral bandwidth. In order to obtain an …

As a potent greenhouse gas and an ozone-depleting agent, nitrous oxide (N2O) plays a
critical role in the global climate. Effective mitigation relies on understanding global sources …

We present a novel, to the best of our knowledge, system for high-resolution, time-resolved
spectroscopy in the mid-wave infrared based on a modelocked vertical external cavity …

We report on the use of direct frequency comb spectroscopy to accurately measure the
concentrations of C 16 12 O 2 and C 16 13 O 2 isotopologs in a gas sample. We …

The large volume and weak environmental adaptability of fiber optical frequency combs
(OFCs) have become the main obstacles for their applications in various fields. To address …

The rapid measurement of gas concentrations is beneficial to a broad range of applications,
including pollution monitoring, high-precision spectroscopy, and medical breath analysis …

Frequency combs with high repetition rates above 1 GHz offer a number of advantages over
more common Mhz combs, such as higher power per comb line, more easily resolvable …

Mid infrared frequency combs allow for high resolution absorption spectroscopy of molecular
species, which have strong signatures in this spectral region. Dual comb spectroscopy can …