Metasurfaces for optical applications such as metalenses are an exciting and promising technology. Their small size, ease to manufacture at scale, and cost-efficiency will revolutionize multiple optical applications across many industries. Phasics' unique wavefront sensor capabilities are leveraged to control and measure the nanostructures composing the metasurfaces. Also, the optical function, imaging quality, or simply the wavefront shape at the output of the metaoptics can be measured.
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Nanostructures inspection measurement setup
A Phasics quantitative phase camera is installed on a standard optical microscope. The metasurface sample is installed and imaged as a classical microscopy observation. In addition to the intensity images, Phasics's software outputs quantitatively the phase features generated by the nanostructures.
Optical function measurement setup
A Phasics SID4 HR wavefront sensor is placed a few millimeters after the metalens focal spot in the diverging beam. In a single acquisition, wavefront, PSF, and MTF are calculated.
Measurement examples
Metalens optical function
PB Metalens optical function measurement performed with SID4-HR wavefront sensor
Metalens PSF and MTF
PSF and MTF measurement in a single shot
Advanced Metaoptics qualification performed with SID4-HR wavefront sensor
Advanced testing: phase profile, through focus calculation, phase vortex
Advantages
Versatile technology
- Wavefront measurement
- Imaging quality: PSF & MTF in one shot
- Metasurfaces structures measurement
Strong capabilities
- High resolution
- Extremely sensitive
- Highly reproducible
Robust approach
- Compatible with standard microscope
- Easy to integrate
- Nanometric phase resolution
