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Compact stabilized semiconductor laser for frequency metrology.

Wei Liang, Vladimir S Ilchenko, Danny Eliyahu

|May 14, 2015

Summary

This summary is machine-generated.

We developed a tunable semiconductor laser using a microresonator for precise frequency control. This laser offers high stability and modulation capabilities, suitable for various applications.

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Area of Science:

Atomic, Molecular, and Optical Physics
Laser Physics and Photonics

Background:

Semiconductor lasers are crucial for various applications.
Achieving precise frequency control and high stability in lasers remains a challenge.

Purpose of the Study:

To develop a frequency-tunable semiconductor laser with high stability and modulation capabilities.
To demonstrate the laser's performance by locking it to the Rubidium D1 line.

Main Methods:

Utilizing self-injection locking of a 795 nm semiconductor laser to a whispering-gallery-mode microresonator.
Characterizing residual amplitude modulation and frequency noise.
Demonstrating laser locking to the Doppler-free saturated absorption resonance of the (87)Rb D1 line.

Main Results:

Achieved residual amplitude modulation below -80 dB and frequency noise below 300 Hz/Hz(1/2).
Demonstrated frequency modulation speed exceeding 1 MHz and span over 4 GHz.
Measured relative frequency stability better than 10(-12) over 1 day.

Conclusions:

The developed laser architecture enables frequency-modulatable lasers with excellent performance.
This technology is adaptable for creating tunable lasers at any desired wavelength.