Spectrally and spatially distributed phase-conjugate, long-laser resonator

A wireless link that establishes a secure duplex communications channel between a pair of ends of an optical cavity, comprised of a master unit and at least one remote unit, over a long distance, for providing secure optical power distribution and for providing a secure two-way communications link, each end comprising an optical phase conjugate mirror to compensate for propagation distortions, to minimize optical scattering and to provide auto-aliment of an ensemble of optical elements, and, concomitantly, comprising mode-locking of said optical cavity formed by said master unit and at least one remote unit to further assure a secure link with minimal third-party detection and third party interception, the combination of which improves two-way security of a secure communications channel and security of optical power distribution between said master unit and at least one said remote unit, comprising, in combination:

• a first optical phase conjugate mirror;
• a second optical phase conjugate mirror remotely disposed from, and aligned with, said first optical phase conjugate mirror, said first optical phase conjugate mirror and second optical phase conjugate mirrors defining a pair of ends of an optical cavity over a distance, said optical cavity providing an output optical beam;
• a first modulator disposed adjacent to said first optical phase conjugate mirror and disposed within said optical cavity, said first modulator responding to a first modulating signal resulting in a mode-locked said output optical beam of said optical cavity;
• an optical phase shifting apparatus disposed adjacent to said first modulator and disposed within said optical cavity, for optimizing said mode-locked output optical beam of said optical cavity;
• a second modulator disposed adjacent to said optical phase shifting apparatus and disposed within said optical cavity, said second modulator encoding said output optical beam of said optical cavity in response to a second modulating signal;
• a first laser amplifier disposed adjacent to said second modulator and disposed within said optical cavity;
• a first optical telescope and a first aperture disposed between said first laser amplifier and said second modulator and disposed within said optical cavity for controlling a field of view of said optical cavity;
• a third modulator disposed adjacent to said second optical phase conjugate mirror and disposed within said optical cavity, said third modulator providing a third modulating signal resulting in a mode-locked said output optical beam of said optical cavity in response to a third modulating signal;
• a fourth modulator disposed adjacent to said third modulator and disposed within said optical cavity, said fourth modulator encoding said output optical beam of said optical cavity in response to a fourth modulating signal;
• a second laser amplifier disposed adjacent to said fourth modulator and disposed within said optical cavity, a combined gain of said first laser amplifier and second laser amplifier being at least sufficient to sustain laser oscillation within said optical cavity:
• a second optical telescope and a second aperture disposed between said second laser amplifier and said fourth modulator and disposed within said optical cavity for controlling a field of view of the said optical cavity;
• a first photodetector disposed external to said optical cavity, in response to said fourth modulating signal;
• a second photodetector disposed external to said optical cavity, in response to said second modulating signal;
• a photovoltaic power converter disposed external to said optical cavity and adjacent to said second photodetector, for converting said output optical beam to electricity;
• and
• a wireless link that establishes a secure duplex communications channel between said first optical phase conjugate mirror and said second optical phase conjugate mirror.

An optical system for distributing optical power and for establishing a secure two-way communications link between a master unit and at least one remote unit, each comprising an optical phase conjugate mirror to compensate for propagation distortions, to minimize optical scattering and to provide auto-aliment of an ensemble of optical elements. wherein each optical phase conjugate mirror is self-starting with essentially zero threshold requirements, employing retro-arrays for “bootstrapping” initiation in a closed-loop adaptive optical geometry and, further, comprising mode-locking of an optical cavity formed by a master unit and at least one remote unit, with cooperative mode-locking by imposing at least one modulation signal onto at least one respective intracavity beam at a respective end of an optical resonator, to establish a secure optical link with minimal third-party detection and third party interception, and, moreover, a secure duplex wireless communications link between a first optical phase conjugate mirror and a second optical phase conjugate mirror to set an ensemble of parameters for the optical link, a sum total combination of which enhances a security of the two-way communications link as well as a security of optical power distribution between the master unit and at least one remote unit, comprising, in combination:

• a first optical phase conjugate mirror;
• a second optical phase conjugate mirror remotely disposed from, and aligned with, said first optical phase conjugate mirror, said first optical phase conjugate mirror and second optical phase conjugate mirrors defining a pair of ends of an optical cavity over a distance, said optical cavity providing an output optical beam;
• a first modulator disposed adjacent to said first optical phase conjugate mirror and disposed within said optical cavity, said first modulator responding to a first modulating signal, resulting in modulation of optical cavity modes;
• an optical phase shifting apparatus disposed adjacent to said first modulator and disposed within said optical cavity, for optimizing a mode-locked output optical beam of said optical cavity;
• a second modulator disposed adjacent to said optical phase shifting apparatus and disposed within said optical cavity, said second modulator encoding said output optical beam of said optical cavity in response to a second modulating signal;
• a first laser amplifier disposed adjacent to said second modulator and disposed within said optical cavity:
• a first optical telescope and a first aperture disposed between said first laser amplifier and said second modulator and disposed within said optical cavity for controlling a field of view of said optical cavity;
• a third modulator disposed adjacent to said second optical phase conjugate mirror and disposed within said optical cavity, said third modulator providing a third modulating signal, resulting in a mode-locked said output optical beam of said optical cavity in response to a third modulating signal;
• a fourth modulator disposed adjacent to said third modulator and disposed within said optical cavity, said fourth modulator encoding said output optical beam of said optical cavity in response to a fourth modulating signal;
• a second laser amplifier disposed adjacent to said fourth modulator and disposed within said optical cavity, a combined gain of said first laser amplifier and said second laser amplifier being at least sufficient to sustain laser oscillation within said optical cavity;
• a second optical telescope and a second aperture disposed between said second laser amplifier and said fourth modulator and disposed within said optical cavity for controlling a field of view of the said optical cavity;
• a first photodetector disposed external to said optical cavity, in response to said fourth modulating signal;
• a second photodetector disposed external to said optical cavity, in response to said second modulating signal;
• a photovoltaic power converter disposed external to said optical cavity and adjacent to second photodetector, for converting said output optical beam to electricity;
• and
• a wireless link that establishes a secure duplex communications channel between said first optical phase conjugate mirror and second optical phase conjugate mirror.