Fabry-Perot Cavities
We’ve accumulated decades of experience in designing, testing, and optimizing Fabry-Perot cavities and housings for laser frequency stabilization. Let our experience work for your success. For many applications, a custom mirror coating, a standard cavity spacer, and matching vacuum housing allow for a quick delivery. For custom cavity lengths or applications, we build exactly what you need – and we love a challenge! To do so, we work closely with some of the finest suppliers in the industry, including FiveNine Optics and specialized coating houses.
- Assistance selecting a cavity geometry & housing for your application
- Fully characterized zero-crossing temperature (Tzc) of the spacer or cavity
- High finesse Fabry-Perot cavity and/or multi-wavelength-band cavity options
- We can also clean cavity mirrors, or upgrade your cavity with new mirrors
![](https://stage.stablelasers.com/wp-content/uploads/2017/06/StableLaserSystems_Cavites-Cylindrical-384x340.jpg)
Cylindrical Cavities
Cylindrical cavities feature a tried-and-true geometry for spectroscopy, offering locked laser linewidths at the 40 Hz level.
- 100 mm long, 1.5 GHz FSR
- 50 mm diameter
- Standard mirror configuration is plano-50 cm ROC
- Zero crossing temperature may be selected at time of order
![](https://stage.stablelasers.com/wp-content/uploads/2017/08/StableLaserSystems_Cavites-Notched-384x340.jpg)
Notched Cavities
Notched cavities offer reduced acceleration sensitivity as compared to a cylindrical design. With a long spacer lengths, such as 100 – 300 mm, it is easier to achieve 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.
- 100 mm long, 1.5 GHz FSR
- 50 mm diameter
- Standard mirror configuration is plano-50 cm ROC
- Zero crossing temperature may be selected at time of order
![](https://stage.stablelasers.com/wp-content/uploads/2017/08/StableLaserSystems_Cavites-BareCube-384x340.jpg)
Spherical & Cubic Cavities
Spherical and 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.
- 50 mm long, 3.0 GHz FSR
- 50 mm diameter
- Standard mirror configuration is plano-50 cm ROC
- 2 x 50 cm ROC mirror configuration also available
- Zero crossing temperature may be selected at time of order
![](https://stage.stablelasers.com/wp-content/uploads/2020/04/SLS-4-bore39008-web-768x576.jpg)
Multiple-Bore Cavities
Greater flexibility and laser stabilization options in a convenient and cost-effective approach with our multi-line and multi-bore cavities. A single cavity spacer can accommodate up to four mirror pairs, providing a frequency reference for many different color lasers.
- Enjoy common-mode drift when locking two to four lasers, e.g., cooling, clock, lattice, and repump lasers for Ba, Sr, or Yb
- Cavity finesse and wavelengths are completely customizable
- Broadband mirror coating options give 30,000 finesse from 600-1100 nm, providing a universal cavity for laser spectroscopy, regardless of your atom or ion.
![](https://stage.stablelasers.com/wp-content/uploads/2017/08/StableLaserSystems_Cavites-Midplane-384x340.jpg)
Midplane Cavities
The careful design and mounting of midplane cavities means low vibration sensitivity in the vertical dimension. These cavities can be relocated while preserving alignment.
- 78 mm long, 2 GHz FSR
- 50 mm diameter
- Standard mirror configuration is plano-50 cm ROC
- Zero crossing temperature may be selected at time of order
![](https://stage.stablelasers.com/wp-content/uploads/2017/08/StableLaserSystems_Cavites-Custom-384x340-1.jpg)
Custom Cavities
We frequently provide additional customization of cavities & housings for our customers, from very long 200-300 mm cavities to power buildup and confocal cavities. Customization of individual optical elements may include:
- Mirror coatings capable of finesse values ranging from 20 to 500,000
- Multi-band mirror coatings using IBS dielectrics; crystalline mirrors
- Spacers that are long, Z-shape, or which have multi-beam access for atomic physics & sensing
- Unique options: build-up cavity, ULE ring cavity, confocal cavity
- Folded cavities up to 300 mm in length for spectroscopy