Spectroscopy system with laser and pulsed output beam

A spectroscopy system, comprising:

• a light source comprising:
• an input light source, including one or more semiconductor diodes, configured to generate an input beam that comprises a wavelength shorter than 2.5 microns;
• one or more optical amplifiers configured to receive at least a portion of the input beam and form an amplified optical beam having a spectral width;
• and
• a nonlinear element configured to receive at least a portion of the amplified optical beam and to broaden the spectral width of the received amplified optical beam to 100 nm or more through a nonlinear effect forming an output beam, wherein the output beam is pulsed;
• at least one of a lens and a mirror configured to receive at least a portion of the output beam, and to deliver at least a portion of the received output beam to a sample;
• and
• a detection system comprising one or more detectors configured to receive at least a part of the output beam reflected or transmitted from the sample, wherein the detection system is configured to use a lock-in technique with the pulsed output beam;
• and
• wherein the spectroscopy system is adapted to perform spectral fingerprinting to measure a chemical composition of the sample.

A spectroscopy system, comprising:

• a light source comprising:
• an input light source, including one or more semiconductor diodes, configured to generate an input beam that comprises a wavelength shorter than 2.5 microns;
• one or more optical amplifiers configured to receive at least a portion of the input beam and form an amplified optical beam having a spectral width, wherein at least a portion of the one or more optical amplifiers comprises a cladding-pumped fiber amplifier;
• and
• a nonlinear element configured to receive at least a portion of the amplified optical beam and to broaden the spectral width of the received amplified optical beam to 100 nm or more through a nonlinear effect forming an output beam, wherein the output beam is pulsed;
• at least one of a lens and a mirror configured to receive at least a portion of the output beam, and to deliver at least a portion of the received output beam to a sample;
• and
• a detection system comprising one or more detectors configured to receive at least a part of the output beam reflected or transmitted from the sample, wherein the detection system is configured to use a box-car averager with the pulsed output beam;
• and
• wherein the spectroscopy system is adapted to measure a chemical composition of the sample.