Compact frequency-stabilized diode lasers

Mikko Merimaa

doi:10.1117/12.469829

10 June 2002 Compact frequency-stabilized diode lasers

Mikko Merimaa

Proceedings Volume 4647, Functional Integration of Opto-Electro-Mechanical Devices and Systems II; (2002) https://doi.org/10.1117/12.469829
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

Abstract

Frequency stabilized diode lasers are key devices in many atom physics experiments and they are increasingly used in diverse metrological applications. Diminishing channel spacing in wavelength division multiplexing and requirement for worldwide interconnectivity motivates the study of diode laser stabilization at telecommunications wavelengths. In this paper recent development in diode laser frequency stabilization are briefly reviewed and recent research on frequency stabilized diode lasers conducted in the Metrology Research Institute of the Helsinki University of Technology is described. Special emphasis is on two compact diode laser based frequency standards at 633 nm, which are described in detail. This wavelength is especially interesting, as it is the most common wavelength in the realization of the definition of the meter. The first system is based on a solitary diode laser, which is forced to operate in a single mode using weak optical feedback from a closely mounted microlens. The properties of this system are sufficient for many practical applications, e.g. interferometry. The second system is base don a miniaturized external-cavity laser and demonstrates that the stability level of iodine-stabilized He-Ne lasers can be reached with iodine-stabilized diode lasers. A transmission grating in the Littrow configuration is used in this external-cavity laser, as it allows highly compact mechanical design without the problem of directional variation of the output beam while tuning the laser wavelength.

Citation Download Citation

Mikko Merimaa "Compact frequency-stabilized diode lasers", Proc. SPIE 4647, Functional Integration of Opto-Electro-Mechanical Devices and Systems II, (10 June 2002); https://doi.org/10.1117/12.469829

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