High bandwidth frequency modulation of an external cavity diode laser using an intracavity lithium niobate electro-optic modulator as output coupler
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 01, 2022
- Source ID
- 10.1063/5.0097880
Entities
People
- A. Steiner
- Andreas Boes
- Arnan Mitchell
- Christian D Marciniak
- Guanghui Ren
- N. Longhurst
- Peter M Farrell
- R. E. Scholten
- S. J. Tempone-wiltshire
- Sonya Palmer
- Thach G Nguyen
- Thomas Monz
Organizations
- Air Force Office of Scientific Research
- Australian Research Council
- Austrian Science Fund
- Intelligence Advanced Research Projects Activity
- RMIT University
- University of Melbourne