Abstract: A spectrometer for identifying an analyte material. One embodiment of the spectrometer includes a single ultrashort pulsed laser (USPL) source, a fiber interferometer, a frequency converter and a transceiver. The USPL source is configured to generate a laser beam. The interferometer is operatively coupled to the USPL source, and is configured to split the laser beam into a first laser beam and a second laser beam, providing a variable difference in lengths between the paths of the first laser beam and the second laser beam. The spectrometer then electronically scans the variable-path second laser beam over the first laser beam to generate interferogram patterns. The frequency converter is configured to receive the interferogram patterns from the interferometer, and perform a frequency conversion of the interferogram patterns to form an output beam. The transceiver is configured to transmit the output beam and to receive radiation from the analyte material.