RECENDT GmbH – 785 nm Laser Power Damage Threshold

SERS spectra of Melamine – Laser Power Dependency measured by Robert Zimmerleiter from RECENDT GmbH

20 ppm

S-Silver hydrophilic


This work was carried out in the course of the MODERNA-project under the Programme Beyond Europe, sponsored by the Austrian Federal Government in collaboration with the Austrian Research Promotion Agency FFG under the contract #874147

The graph shows the Dependency of 785 nm Laser Power using SERS spectra of Melamine at 20 ppm concentration on S-Silver substrates.

Laser wavelength: 785 nm
Laser power: Varying from 3.3 mW to 373 mW
Laser spot size: 150-170 µm
Integration time: 1000 ms
Averaging: 10x
Solvent: H2O
Raman Spectrometer: Wasatch Photonics
Lens magnification: No magnification was used, just a regular Raman-Probe
Sampling method: drop: “10µl of analyte were pipetted onto the substrate”
The substrate used: S-Silver hydrophilic (interchangeably, you can use one of our substrates)


Measured by:
Dipl.‑Ing. Robert Zimmerleiter
Research Scientist
RECENDT – Research Center for Non-Destructive Testing GmbH
Science Park 2, Altenberger Strasse 69, 4040 Linz, Austria
Tel.: +43 732-2468-4624