O2 Monitoring. Oxygen O2 Sensors
Tunable diode laser absorption spectroscopy
Narrow Linewidth < 2MHz
14-pin butterfly package
Excellent wavelength control and stability
Integrated thermoelectric cooler, thermistor, and monitor diode
DFB Laser Linewidth , some of the DFB Lasers have Linewidth < 2MHz, some of them have < 500KHz.
The laser linewidth in a typical single-transverse-mode He–Ne laser, in the absence of intracavity line narrowing optics, can be on the order of 1 GHz. Rare-earth-doped dielectric-based or semiconductor-based distributed-feedback lasers have typical linewidth on the order of 1 MHz.