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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Ultraflat optical frequency comb generated based on cascaded polarization modulators
Chao He1, Shilong Pan, Ronghui Guo
1Microwave Photonics Research Laboratory, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
Optics Letters
|October 9, 2012
Summary
A new method uses a polarization modulator (PolM) and polarizer to create stable, ultraflat optical frequency combs with adjustable spacing. This technique enables precise control over comb line generation for various applications.
Area of Science:
- Photonics
- Optical Engineering
- Laser Physics
Background:
- Optical frequency combs are crucial for precise frequency measurements.
- Existing methods for generating ultraflat combs often lack tunability or stability.
Purpose of the Study:
- To propose and demonstrate a novel, stable, and tunable ultraflat optical frequency comb generator.
- To explore the use of polarization modulation for advanced comb generation.
Main Methods:
- Utilized a polarization modulator (PolM) and a polarizer for comb generation.
- Investigated the joint operation of PolM and polarizer, introducing a third controllable parameter.
- Employed cascading of PolMs to increase the number of comb lines.
Main Results:
- Generated an ultraflat optical frequency comb with five lines by tuning three parameters.
- Successfully generated a 25-line ultraflat optical frequency comb by cascading two PolMs.
- Achieved comb flatness within 1 dB in experimental validation.
Conclusions:
- The proposed PolM-based approach offers a novel and effective method for generating tunable, ultraflat optical frequency combs.
- Cascading PolMs provides a scalable solution for increasing comb line density while maintaining flatness.
- This technique holds promise for applications requiring precise optical frequency control.
