Optical resonator inlaserpdf

The careful design and mounting of midplane cavities means low vibration sensitivity in the vertical dimension. These cavities can be relocated while preserving alignment.

Laser cavitytypes

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Laser cavitylength formula

There is no single cavity design that is clearly superior to all others. The choice of cavity design and materials, instead, depends upon the application. We’ve worked with the leading labs in the world to provide frequency stabilization solutions for a broad range of applications, and can advise on a customized solution for your needs. Factors to consider in choosing the best cavity design for your application include:

Cube cavities are the most compact cavity designs, while still delivering narrow linewidth performance. These rigidly-held spacers can be moved without need for realignment.

Laser cavityfilling

We developed two types of equipment— Core Tuner S (automatic) and Core Tuner (manual) to meet the different requirements of customers. The instruments define new standards of concentricity machines. Superior image processing capabilities give Core Tuner excellent performance—high numerical accuracy, and repeatability. The systems are automatic, intelligent, and easy to use with strong vibration resistance and durability.

Cylindrical cavities feature a tried-and-true geometry for spectroscopy, offering locked laser linewidths at the 10 Hz level. They are the most common cavity design, but other cavity designs offer distinct advantages for some applications.

On the whole, all systems for narrow linewidths use a vibration isolation stage, and the thermal noise floor of the cavity can be reached with any geometry (including cylindrical). If the value of that noise floor is important, then a notched cavity, being longest, has the lowest thermal noise floor (assuming a good choice of mirrors for large beam spot size).

Notched cavities offer reduced acceleration sensitivity as compared to a cylindrical design. Long spacer lengths, from 100 mm up to 300 mm, yield the lowest thermal noise floor and narrowest laser linewidths. We recommend a notched cavity geometry when Hz-level linewidths and low frequency drift are paramount.