To perform time- and frequency resolved experiments at milliKelvin temperatures, we coupled a high-resolution FTIR spectrometer to an optically-enabled dilution refrigerator. With all off-axis parabolic design we have achromatic, low aberration light transmission.
CAD drawiing of coupling setup
Optical spot at the fridge sample plane,
identical to the source aperture.
identical to the source aperture.
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