D2-210 Saturated Absorption Spectroscopy Module
D2-210 saturated absorption spectroscopy module provides primary frequency standard based on alkali metal hyperfine spectra
- Configurable for Potassium, Rubidium, or Cesium
- Side or Peak Locking
- Temperature stabilized
- Intensity normalized
- Magnetic shielding
- Terminal or pass-through configuration
- Improved mechanics
- Optional Doppler subtraction and fiber coupling
- 5 MHz loop bandwidth
The D2-210 Saturated Absorption Spectroscopy Module is an integral piece of our complete line of photonics tools supporting the AMO Community.
Saturated Absorption High-Precision Frequency Reference
Vescent Photonics’ D2-210 second-generation Spectroscopy Module makes locking to atomic transitions easier and more powerful than ever before. Completely redesigned to maximize performance in a number of laser-locking environments, the D2-210 makes atomic absorption-referenced frequency locks simple. Designed to work as a general-purpose frequency discriminator, it is compatible with our D2-125 Reconfigurable Servo as well as other feedback loop filters.The D2-210 can be charged with either Potassium, Rubidium, or Cesium. It is magnetically shielded to reduce perturbations due to magnetic fields, and accommodates free-space or, optionally, a fiber-coupled input. The D2-210 allows flexible operation, accepting laser powers from microwatts to over a hundred milliwatts, and it also offers improved, easier-to-align optomechanics and a beam path that effectively eliminates back reflections to the laser. The D2-210 provides a signal to lock to either the side of an absorption or the peak and can optionally support Doppler-broadened background subtraction.
|Fill Choices||K, Rb, Cs|
|Coupling Configuration||Terminal or pass-through|
|Input power range1||2-1,000 mW|
|Input type||Free-space or Fiber-coupled2|
|Supported locks||Side-of-transition, peak|
|Gas Cell Temperature||~35°C|
|Package Dimensions||3.62" × 4.98" × 1.7"|
|Transimpedance (signal)||20 kΩ|
|Bandwidth (signal)||5 MHz|
|Noise @ 4 MHz (shot level)||80 nV/√Hz|
|Power Cable||Order VPN00410 Hirose-to-D Sub 9-pin when powered by D2-005
Order VPN00475 Hirose-to-Hirose when powered by ICE-Box
All specification subject to change without notice.
1For best results. As little as 500 µW will produce usable signals.