Implementation of ultrahigh frequency emitters and applications to radar and telecommunications
AssigneeCommissariat a l'Energie Atomique
InventorsSerge Gidon, Engin Molva, Philippe Thony
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Abstract
The invention concerns an ultrahigh frequency emitting device, having: at least a first and a second microlaser (22, 24), emitting at two different frequencies ω1 and ω2, means of slaving the first and the second microlaser frequency-wise, an array of N elements (N≧2) (52, 54, 56, 58) placed on the path of the beam of the second laser, each element making it possible to impose a phase delay on the beam which passes through it, N means (26, 28, 30, 32) for mixing the beam emitted by the first laser and each of the N delayed beams, and for producing N signals of frequency ω1-ω2, N antenna-forming means (34, 36, 38, 40) for emitting radiation at the frequency ω1-ω2.
Claims23
An ultrahigh frequency emitting device, having a plurality of laser emitter pairs, each of said laser emitter pairs having a first and a second laser emitter emitting electromagnetic waves in the optical domain, at a first and a second frequency ω1, ω2, respectively, ω1 and ω2 being different;
- a number of phase delay elements, each being placed in the path of said second laser emitter of one of said laser emitter pairs, and each said phase delay element adapted to impose a phase delay on the beam of said second laser emitter;
- means for slaving each said laser emitter pair in one of a frequency and phase manner, and a frequency, phase, and amplitude manner;
- a number of means for mixing each of the beams emitted by said first emitters with each of the beams emitted by said second emitters, and delayed by said phase delay elements thereby imposing a phase delay, and producing a number of signals at the ultrahigh frequency ω1-ω2 by heterodyning of said electromagnetic waves;
- means for converting optical signal to an RF signal;
- and a number of antenna-forming means for emitting radiation at the frequency ω1-ω2.
An ultrahigh frequency emitting device, having a plurality of laser emitter pairs, each said laser emitter pair having a first and a second laser emitter emitting electromagnetic waves in the electromagnetic domain, at a first and a second frequency ω1, ω2, ω1 and ω2 being different;
- means for frequency slaving each said laser emitter pair;
- means for modifying the frequency of one of said laser emitter of at least one of said laser emitter pairs with respect to the frequency of the other laser emitter of said laser emitter pair;
- a number of means for mixing each of the beams emitted by said first emitters with each of the beams emitted by said second emitters, and for producing a signal at the ultrahigh frequency ω1-ω2 by heterodyning of said electromagnetic waves;
- means for converting an optical signal to an RF signal;
- a number of antenna-forming means for emitting radiation at the frequency ω1-ω2.
Dependencies are inferred from the claim text.