RECENDT GmbH – 532 nm Laser Power Damage Threshold

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

1 ppm

S-Silver hydrophilic


The graph shows the Dependency of 532 nm Laser Power using SERS spectra of Melamine at 1 ppm concentration on S-Silver substrates.

Laser wavelength: 532 nm
Laser power: Varying from 5 mW to 55 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