Laser-Driven Tunable Light Source 

The TLS-EQ-77-UV is a tunable light source optimized to provide monochromatic light in the ultraviolet (UV) wavelength range.

The TLS-EQ-77-UV is built around the EQ-77 LDLS™ and utilizes a customized monochromator that is matched to the optical characteristics of the LDLS. The system includes a software interface that allows rapid selection of output wavelengths and fast scanning between selected wavelengths.

The high radiance of the LDLS allows more light to be efficiently coupled through a narrow monochromator slit. This means that more light flux can be delivered within a narrow bandwidth than is possible with other tunable light sources.

A user-friendly software interface is provided to enable the selection of output wavelengths as well as the scanning speed between selected wavelengths.



Wavelength Range 200 nm – 800 nm
Wavelength Accuracy +/- 0.5 nm
Scan Speed <20 ms for a 2 nm step
Output Type 600 µm fiber​ optic cable
Numerical Aperture 0.39 NA
Spectral Resolution (bandwidth, FWHM) 4.7 nm
Laser Class Class 1 (IEC 60825: 2014)


Typical Performance
Maximum in-band flux​ 1.6 mW at 300 nm
Average in-band flux ~1.1 mW (200 nm - 500 nm)


In-Band Light Flux Comparison

Average in-band light flux with standard output fibers. For reference only.

TLS Spectral Flux Graph Feb 2021