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Frequency chirped light at large detuning with an injection-locked diode laser
K Teng1, M Disla1, J Dellatto1
1Physics Department, Adelphi University, 1 South Ave., Garden City, New York 11530, USA.
The Review of Scientific Instruments
|May 3, 2015
Summary
We created a laser system for rapid frequency chirping, achieving a 1 GHz chirp in just 5 nanoseconds. This breakthrough enables faster optical modulation speeds for advanced applications.
Area of Science:
- Optics and Photonics
- Laser Technology
- Nonlinear Optics
Background:
- High-speed frequency modulation is crucial for advanced optical systems.
- Existing methods face limitations in speed and frequency offset.
Purpose of the Study:
- To develop a novel laser system capable of generating frequency-chirped light at high modulation speeds.
- To achieve a large frequency offset with rapid modulation.
Main Methods:
- Utilized an external cavity diode laser locked to atomic resonance.
- Employed a lithium niobate electro-optical phase modulator driven by a 6 GHz signal.
- Implemented a second injection-locked diode laser for filtering the ±1 frequency-chirped order.
Main Results:
- Generated frequency-chirped light at modulation speeds of approximately 100 MHz.
- Achieved a 1 GHz frequency chirp within a 5 nanosecond timeframe.
- Successfully filtered the desired frequency-chirped order by over 30 dB.
Conclusions:
- The developed laser system demonstrates a significant advancement in high-speed frequency chirp generation.
- This technology offers potential for enhanced performance in optical communications and spectroscopy.
