Journal
APL PHOTONICS
Volume 7, Issue 8, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0097880
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Funding
- ARC [LP180100332]
- Austrian Science Fund (FWF) [F7109]
- IQI GmbH
- Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), via U.S. ARO Grant [W911NF-16-1-0070, W911NF-20-1-0007]
- U.S. Air Force Office of Scientific Research (AFOSR) via IOE Grant [FA9550-19-1-7044 LASCEM]
- Australian Research Council [LP180100332] Funding Source: Australian Research Council
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We introduce a novel approach to achieve high bandwidth laser frequency modulation using a lithium niobate chip as an intracavity electro-optic modulator. The integration of the modulator with the cateye output coupler provides a unique solution for high bandwidth frequency stabilization and linewidth narrowing.
We present a novel approach to high bandwidth laser frequency modulation. A lithium niobate chip is used as an intracavity electro-optic modulator in a tunable cateye external cavity diode laser. The modulator is conveniently integrated with the cateye output coupler, providing a unique approach to high bandwidth frequency stabilization and linewidth narrowing. The intracavity modulator feedback was successfully operated below 1 V and achieved superior frequency noise suppression compared to conventional feedback through diode injection current modulation. A closed loop bandwidth of 1.8 MHz was demonstrated, and the laser linewidth reduced to around 1 Hz as measured by the heterodyne measurement. (C) 2022 Author(s).
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