Liquid Nitrogen Dewar

The LN2 Dewar keeps a QCL laser at a fixed 77 K temperature for 4 hours under usage and > 12 hrs otherwise. The laser itself is kept in a sealed compartment with connectors for the standard QCL Pulser. The laser cannot be changed.

The LN2 does not allow for temperature ramp-up.

This cryogenic system is recommended for THz lasers.