ATLAS 685 – Red wavelength-tunable laser
A red wavelength-tunable laser well-suited for spectroscopy of Strontium (Sr) atoms for applications such as atom cooling, atomic clocks, quantum computing and many more.

Laser Specifications
Parameter | Specified Values |
---|---|
Center wavelength | 685 nm ± 5 nm |
Wavelength range | ≥ 10 nm |
Wavelength resolution | ≤ 4 pm |
Wavelength accuracy | ± 10 pm |
Wavelength switching time | 20 ms |
Fiber output power | ≥ 1 mW |
Intrinsic linewidth | ≤ 100 kHz |
Side-mode suppression ratio | ≥ 40 dB |
Modulation bandwidth of diode current | 500 kHz |
Key features
- Visible wavelength tunability
- Ultra-narrow linewidth
- Fully integrated with no moving parts, enabling switching between wavelengths instantly
- Excellent repeatability
- Software based wavelength calibration
- Easy to set-up and use
- Compact size (100*60*20 mm)
- Fiber connector PM FC/APC
Applications
- Sensing market (biomedical, infrastructure and vibration)
- Quantum Key Distribution
- Spectroscopy
- Coherent Communications

ATLAS Adapter
The base module comes equipped with a standard DE9 connector. We offer an add-on module featuring connectors for power, communication (USB-C) and trigger signals (SMA).
To meet laser safety standards, this module adds key control and a remote interlock connector.
Got more questions about the ATLAS Laser?
➤ Check out our FAQ page — a section dedicated to ATLAS covers the most common questions and answers.

Explore other ATLAS modules: The ATLAS family of wavelength-tunable lasers comes in a range of models: 685 nm, 850 nm, 1550 nm, 1600 nm, and 1700 nm.