Patent ID: 8837540

Claim:
A spectroscopic assembly, comprising: a thermal isolation platform; a gas reference cell encasing a gas and attached to the thermal isolation platform, the gas reference cell having at least one optically-transparent window; and at least one heater configured to raise a temperature of the encased gas, wherein the at least one heater is patterned on one of: the gas reference cell or the thermal isolation platform, wherein when a beam splitter is configured to reflect a portion of an input optical beam emitted by a laser to be incident on the at least one optically-transparent window of the gas reference cell, and an at least partial reflective surface is configured to reflect the reflected portion, the reflected portion of the input optical beam is twice transmitted through the gas, and when a detector is configured to receive the optical beam twice transmitted through the gas, a feedback signal is provided to the laser to stabilize the laser.