Spectrometer based on injection lasers emitting near-infrared radiation

A two-beam spectrometer utilizing injection lasers emitting in the near infrared was constructed. The spectrometer utilizes rapid scanning of the laser emission frequency followed by recording with an analog–digital converter. The spectrometer parameters are as follows: a spectral resolution of at least 2 X 10 ^– 3 cm ^– 1, a response time 50 ns, and a detectivity amounting to 0.0003% of the incident power carried by one pulse.