Optical pulse contrast improvement using nonlinear conversion
US10114107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Apr 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser radar (LADAR) system includes a laser transmitter configured to (i) emit laser pulses at a first wavelength and (ii) emit amplified spontaneous emission (ASE) in a spectrum concentrated around the first wavelength. The LADAR system also includes a non-linear converter configured to (i) convert the laser pulses to a second wavelength and (ii) allow the ASE to remain substantially unconverted in the spectrum concentrated around the first wavelength. The LADAR system further includes a receiver configured to receive and detect reflected laser pulses, where the reflected laser pulses include the laser pulses at the second wavelength after reflection from at least one target. In addition, the LADAR system includes a spectral filter configured to (i) allow passage of the laser pulses or the reflected laser pulses and (ii) substantially filter the ASE and prevent the filtered ASE from being detected by the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.