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HRCF-08122022 - V 1.1
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1. OVERVIEW
Ideal Vacuum’s Habanero™ is a benchtop sized reference absorbtion cell heating furnace for
spectroscopy, and can be used with all of our sealed wavelength reference cells. The Habanero
furnace provides a stable temperature and convenient package for many reference cell applications.
It provides an even, elevated temperature to maintain a constant absorption spectrum of tellurium
for laser locking and spectrum calibration. For applications where greater resolution is required,
it can be used in a saturated absorption system for doppler-free absorption spectroscopy. As
configured, the Habanero is ready for use in transmission spectroscopy.
With a maximum operating temperature of 900°C, the Habanero furnace is especially useful
for high temperature references such as tellurium and the excited states of iodine. With its wide
operating range from maximum to ambient, the Habanero can be used with all of Ideal Vacuum’s
sealed wavelength reference cells. Note that care must be taken not to exceed the damage
threshold temperature of alkali and organic reference cells.
Raising the temperature of a reference material that is solid under normal conditions increases the
number density of atoms or molecules in the gas phase. This increases the optical density of the
reference, increasing signal-to-noise ratios and the number of lines that can be confidently used
to calibrate a spectrum. Raising the temperature also changes the distribution of populated states,
allowing access to calibration-quality absorption lines beginning from higher rotational, vibrational,
and even electronic states in wavelength ranges inaccessible at normal room temperature. Some
reference materials have absorption lines or peaks that move as a function of temperature. For
these materials, the Habanero furnace can provide the precise long-term temperature control
necessary to maintain laser calibration for the full duration of an experiment.
1.1 INTRODUCTION
