Chirped pulse frequency-domain comb for spectroscopy

An apparatus, comprising:

• a waveform generator circuit configured to generate a pulse train comprising chirped pulses of electromagnetic energy to excite a sample, the respective chirped pulses including a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation;
• wherein a width of a frequency-domain comb peak is established at least in part by a total duration of the pulse train;
• and
• wherein a bandwidth of a first frequency-domain comb is determined at least in part by the first specified bandwidth of the respective chirped pulses.

An apparatus, comprising:

• means for generating a pulse train comprising chirped pulses of electromagnetic energy to excite a sample, the respective chirped pulses including a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation;
• and
• wherein a width of a frequency-domain comb peak is established at least in part by a total duration of the pulse train;
• and
• wherein a bandwidth of a first frequency-domain comb is determined at least in part by the first specified bandwidth of the frequency sweep of the respective chirped pulses.