Solo 689.4 QT Series Laser

Ultra-narrow Linewidth

Solo 689.4 QT Series lasers are specifically designed for deployment in systems utilising strontium transitions. Its outstanding beam characteristics and small footprint makes it a compelling choice for such a demanding application.

Key Features

Narrow Linewidth

≤ 0.3 MHz (no external ref.)

High Power Stability

≤ 2.0 %

High Spectral Stability

± 1.0 pm

Excellent Beam

Quality

Integration Features

USB Connectivity

Software Control

Combined Heatsink

Remote Diagnostics

Specifications

Output Power (fixed value within range)

10 - 30 mW

Wavelength

689.4 nm

Spectral Bandwidth

≤ 0.3 MHz (no external ref.)

Spatial Mode

TEM00

Spectral Stability (over 8 hours)

± 1.0 pm

Coherence Length

> 100 m

Output Power Stability (over 8 hours)

≤ 2.0 %

Output Power Noise (10 Hz - 10 MHz)

≤ 0.1 % RMS

Beam Divergence

≤ 1 mrad, diffraction limited

Beam Diameter at Output Aperture

0.8 - 1.2 mm

Beam Pointing Stability

≤ 5 µrad/°C

Polarisation Ratio

≥ 100:1

Laser Head Dimensions

L X W

207 x 80 mm

Beam Height

75 mm

Environmental Conditions

Ambient Temperature Range

18 - 30 °C

Laser Head Interface Stability

± 0.5 °C

Storage

0 - 50 °C

Humidity

5 - 95 %, non-condensing

Applications

Downloads

Download datasheet

Optional Extras

Water Cooling
For specialised applications that demand minimal perturbance and vibration, we offer a water cooling solution utilising a high performance thermo-electric chiller. Should your cooling needs change in the future, the water cooling loop can simply be disconnected from the pedestal and the laser head may be cooled passively.

This option replaces our standard passive cooling pedestal.
Versatile Software Control
If you require greater control and monitoring of your laser's parameters, consider our PC control interface. Depending on your requirements, users are able to turn the connected laser on and off, refine output power and monitor performance.
Remote Diagnostic Support
We also offer a remote diagnostics option so our laser engineers can monitor the performance of your laser and make necessary adjustments, without the need for a call-out.