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Acousto-optic modulator based frequency stabilized diode laser system for atom trapping.

Peter D McDowall¹, Mikkel F Andersen

¹Jack Dodd Center for Quantum Technology, Department of Physics, University of Otago, Dunedin 9016, New Zealand.

The Review of Scientific Instruments

|June 3, 2009

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We developed an inexpensive, robust laser system for rubidium atom manipulation. This system achieves a narrow linewidth suitable for laser cooling and trapping, with rapid frequency tuning and stable locking.

Area of Science:

Atomic, Molecular, and Optical Physics
Laser Spectroscopy
Quantum Technologies

Background:

Precise control of laser frequency is crucial for atomic manipulation.
Commercial laser diodes often require complex stabilization for high-precision applications.
Laser cooling and trapping techniques are fundamental in atomic physics research.

Purpose of the Study:

To develop an inexpensive and robust laser system for stabilizing a commercial laser diode to the rubidium D(2)-line.
To achieve a narrow laser linewidth for applications in laser cooling and trapping.
To demonstrate the system's capability for rapid frequency tuning and stable operation.

Main Methods:

Utilized a simple stabilization scheme for a commercial laser diode.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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Published on: April 24, 2014

Employed the rubidium D(2)-line as the reference transition.

Measured laser linewidth, frequency drift, and tuning speed.

Main Results:

Achieved a laser linewidth of 1.3 MHz without an external cavity.
Demonstrated rapid frequency tuning (within 51 microseconds) while maintaining lock.
Observed a peak-to-peak frequency drift of less than 850 kHz over 25 hours.
Successfully demonstrated laser cooling and trapping of rubidium atoms.

Conclusions:

The developed system provides an inexpensive, robust, and high-performance solution for laser cooling and trapping.
The system's rapid tuning capability opens possibilities for dynamic atomic manipulation.
This work facilitates accessible research in atomic physics and quantum technologies.