Characterization and Applications of Auto-locked Vacuum Sealed Diode Lasers for Precision Metrology

• DOI: 10.26226/m.6275705f66d5dcf63a31174f
• Publication Date: 2022-05-25T19:31:01Z
• Authors: Alexander Pouliot; Hermina Beica; Adam Carew; Andrew Vorozcovs; Nima Afkhami-Jeddi; Thomas Vacheresse; Gehrig Carlse; Patrick Dowling; Boris Barron; A Kumarakrishnan
• Keywords: Desk; Characterization

We demonstrate the performance characteristics of a new class vacuum-sealed, autolocking diode laser systems and their applications to precision metrology.The is based on adaptations design that uses optical feedback from an interference filter it includes vacuum-sealed cavity, interchangeable base-plate, digital controller.A change base-plate allows operation at desired wavelengths in visible near infrared spectral range, whereas ability be tuned frequency stabilized with respect atomic, molecular, solid-state resonances without human intervention using variety control algorithms programmed into same controller.We characterize stability this system Allan deviation (ADEV) beat note lock signal.We find ADEV floor 2 × 10 -12 short-term linewidth ∼200 kHz are strongly influenced by current noise vacuum sealing.Reducing cavity pressure decreases increases averaging time which occurs, signature long-term stability.We also show evacuating ∼1 Torr reduces range correction signal loop approximately one order magnitude, thereby increasing controller.The incorporated commercial gravimeter for accurate measurements gravitational acceleration level few parts-per-billion, comparable values obtained iodine-stabilized He-Ne laser.The pattern-matching features controller allow temperature tunable transmission spectrum fiber-Bragg grating.This capability may suitable development differential absorption LIDAR transmitter can generate data both on-line off-line points single laser.