Absorption Microscopy of Optical Coatings
Our novel cavity imaging technology enables to get new insight into high.end optical coatings for high power laser applications or low loss resonators.
Characterize high power, low loss optical coatings with unprecedented spatially resolved measurement of minuscule absorption and scattering. Improve quality control with ultra-fast screening for tiny defects and optimize coating parameters with a new level of insight.
Key numbers
High speed, resolution and unprecedented sensitivity at the same time.
< 1ppm Absorption
Noise floor down to 0.1ppm and few ms measurement time
» 1GW / cm² Power density
Measure with very high local powers
~1µm Resolution
Work at 4 Kelvin and below in your closed-cycle cryostat and apply magnetic fields.
10s/0.3x0.3mm² Imaging rate
High speed imaging
Features
Move your coatings and quality control to the next level
ULTRA-SENSITIVE
Sub ppm resolved absorption and scattering measurement with
micrometer resolution.
FAST
Imaging in seconds and possibility of screening whole mirrors for defects with μm resolution.
QUALITY CONTROL
Quick results in quality control lines. Detect defects early.
LOCAL FAILURE DETECTION
Detect, characterize and compare very localized and even weak local
absorbing spots, light induced damage, dirt and scratches.
ALL WAVELENGTHS
Compatible with all Wavelengths, needing only mW of laser power.
UV - MIR, 1064nm, 512nm, ...
Distinguish absorption and scattering
We can distinguish with high sensitivity absorption and scattering losses. Get insight in dominant loss channels and see spacial patterns. Optimize your HR coatings or super-polished substrates accordingly for lowest losses and higher LIDT.
Use simple and low-maintenance Laser sources
Our technology just needs low power diode laser instead of complicated to operate high-power lasers. This simplifies inclusion in frequent processes like quality control and reduces costs for purchasing, operation and maintenance. No complex laser safety measures are required.
Spectroscopy
Get more insights into your absorbing defects by quickly collecting spectra.