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Photonic circuits for laser stabilization with integrated ultra-high Q and Brillouin laser resonators

Journal Article · · APL Photonics
DOI:https://doi.org/10.1063/5.0091686· OSTI ID:1979085
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [5];  [2];  [3]
  1. University of California, Santa Barbara, CA (United States); University of California Santa Barbara, Santa Barbara, California 93106, USA
  2. Northern Arizona University, Flagstaff, AZ (United States)
  3. University of California, Santa Barbara, CA (United States)
  4. Morton Photonics, West Friendship, MD (United States)
  5. University of Colorado, Boulder, CO (United States); National Institute of Standards and Technology (NIST), Boulder, CO (United States)

The integration of stabilized lasers, sources that generate spectrally pure light, will provide compact, low-cost solutions for applications including quantum information sciences, precision navigation and timing, metrology, and high-capacity fiber communications. We report a significant advancement in this field, demonstrating stabilization of an integrated waveguide Brillouin laser to an integrated waveguide reference cavity, where both resonators are fabricated using the same CMOS-compatible integration platform. We demonstrate reduction of the free running Brillouin laser linewidth to a 292 Hz integral linewidth and carrier stabilization to a 4.9 × 10–13 fractional frequency at 8 ms reaching the cavity-intrinsic thermorefractive noise limit for frequencies down to 80 Hz. We achieve this level of performance using a pair of 56.4 x 106 quality factor Si3N4 waveguide ring-resonators that reduce the high-frequency noise by the nonlinear Brillouin process and the low-frequency noise by Pound–Drever–Hall locking to the ultra-low loss resonator. These results represent an important step toward integrated stabilized lasers with reduced sensitivity to environmental disturbances for atomic, molecular, and optical physics (AMO), quantum information processing and sensing, and other precision scientific, sensing, and communications applications.

Research Organization:
University of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); Defense Advanced Research Projects Agency (DARPA); National Defense Science and Engineering Graduate (NDSEG)
Grant/Contract Number:
AR0001042
OSTI ID:
1979085
Alternate ID(s):
OSTI ID: 1888611
Journal Information:
APL Photonics, Journal Name: APL Photonics Journal Issue: 9 Vol. 7; ISSN 2378-0967
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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