Patent ID: 11967799
Assignee: PILOT PHOTONICS LIMITED
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method of performing spectroscopy, the method comprising:
providing an injection locked gain switched optical frequency comb using a gain-switched laser diode driven with a radio frequency (RF) signal, wherein the injection locked gain switched optical frequency comb is provided by using the gain-switched laser diode to injection lock the injection locked gain switched optical frequency comb;
reconfiguring comb spacing of the injection locked gain switched optical frequency comb by altering frequency of the RF signal;
directing the injection locked gain switched optical frequency comb through or at a sample;
obtaining spectroscopic measurements representative of interaction of one or more comb lines in the injection locked gain switched optical frequency comb with the sample;
adjusting center frequency of the injection locked gain switched optical frequency comb to a known absorption band or gap;
adjusting a comb source to cause one or more comb lines to interact with molecular absorption bands of the molecule;
determining distances to absorption peaks by monitoring changes in transmission; and
determining presence of a molecule and its relative concentration based on the distances to the absorption peaks.