Maryland's Defense Patent Database

The defense community in Maryland is an R&D powerhouse.

Use this database to see the innovative patents that are poised for commercialization.

Doppler asymmetric spatial heterodyne spectroscopy

Patent image

A Doppler Asymmetric Spatial Heterodyne (DASH) spectrometer includes an input aperture for receiving an input light; a collimating lens for collimating the input light into a collimated light; offset establishing means, including at least one grating, for i) receiving and splitting the collimated light into a first light wavefront in a first optical path and into a second light wavefront in a second optical path, ii) establishing an offset in a light wavefront path distance between the first and second optical path light wavefronts, and iii) diffracting and recombining the first and second optical path light wavefronts into an interference wavefront to form an interference image that includes a plurality of phase points of a heterodyned interferogram measured simultaneously over the path distance offset; and an output optics section comprising a detector for receiving the interference image and outputting an interference image pattern.

Harlander, John M.; Englert, Christoph R.
Patent Number: 
Technical domain: 
Sensors and Measurement
FIle Date: 
Grant Date: 
Grant time: 
746 days
Grant time percentile rank: 
Claim count percentile rank: 
Citations percentile rank: 
'Cited by' percentile rank: