A method for directing a laser pulsed beam towards a selected area/surface of an object, comprising transmitting from a laser assembly that includes an optical transmitter module a pulsed laser beam having a first pulse duration and illuminating therewith an area/surface of the object, thereby obtai
A method for directing a laser pulsed beam towards a selected area/surface of an object, comprising transmitting from a laser assembly that includes an optical transmitter module a pulsed laser beam having a first pulse duration and illuminating therewith an area/surface of the object, thereby obtaining a reflected pulsed laser beam, the reflected pulsed laser beam including a leading portion reflected from a first reflecting area/surface of the object which is the area of the object that defines the shortest optical path between the optical transmitter module, the object and an optical receiver module; receiving, in a second laser assembly that includes the optical receiver module, the reflected pulsed laser beam and converting it into an amplified phase conjugated pulsed beam of a second pulse duration, and transmitting from the second laser assembly the amplified phase conjugated pulsed beam and illuminating therewith on selected area/surface of the object.
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1. A method for directing a laser pulsed beam towards a selected area/surface of an object, comprising: (a) transmitting from a laser assembly that includes an optical transmitter module a pulsed laser beam having a first pulse duration and illuminating therewith an area/surface of the object, there
1. A method for directing a laser pulsed beam towards a selected area/surface of an object, comprising: (a) transmitting from a laser assembly that includes an optical transmitter module a pulsed laser beam having a first pulse duration and illuminating therewith an area/surface of the object, thereby obtaining a reflected pulsed laser beam; said reflected pulsed laser beam including a leading portion reflected from a first reflecting area/surface of the object which is the area of the object that defines the shortest optical path between the optical transmitter module, the object and an optical receiver module;(b) receiving, in a second laser assembly that includes said optical receiver module, said reflected pulsed laser beam and converting it into an amplified phase conjugated pulsed beam of a second pulse duration;(c) transmitting from said second laser assembly said amplified phase conjugated pulsed beam and illuminating therewith on selected area/surface of the object. 2. The method according to claim 1, wherein said selected area being said first reflecting area/surface of the object. 3. The method according to claim 1, further comprising angularly shifting said amplified phase conjugated pulsed beam by a given shift extent, and wherein said selected area being said first reflecting area/surface of the object shifted dependent upon said shift extent. 4. The method according to claim 1, said first pulse duration falls in a nano-second range. 5. The method according to claim 1, wherein said second pulse duration falls in a pico-second range. 6. The method according to claim 1, further comprising: transmitting by a preliminary laser assembly a preliminary pulsed laser beam having a preliminary pulse duration and illuminating therewith a sector that embraces an area of uncertainty where the object is possibly located to thereby obtain a pulsed laser beam reflected from said area/surface of the object;receiving in said laser assembly said reflected pulsed laser beam and converting it into amplified phase conjugated pulsed beam to thereby generate said pulsed laser beam of said first pulse duration. 7. The method according to claim 6, wherein said laser assembly includes a laser transmitter for generating said pulsed laser beam. 8. The method according to claim 7, wherein said preliminary pulse duration falls in a nano-second range. 9. The method according to claim 1, further comprising, repeating said (a) to (c) to achieve interaction with the surface/area until a criterion is met. 10. The method according to claim 9, wherein said amplified phase conjugated pulsed beam having beam characteristics includes a beam intensity sufficient to give rise to said interaction. 11. The method according to claim 10, wherein said interaction includes cutting. 12. The method according to claim 10, wherein said interaction includes dimpling. 13. The method according to claim 10, wherein said interaction includes welding. 14. The method according to claim 10, wherein said interaction includes scribing. 15. The method according to claim 10, wherein said interaction includes photolithography. 16. The method according to claim 10, wherein said interaction includes drilling. 17. The method according to claim 1, wherein said optical amplifier is substantially depleted from preceding pumping after said amplified phase conjugated pulse beam that corresponds to said leading portion of the reflected pulse beam is generated. 18. The method according to claim 1, wherein said object is moving. 19. The method according to claim 18, wherein said object substantially maintains spatial orientation while possibly being translated. 20. The method according to claim 18, wherein said moving object is rotating at a known rotation rate. 21. The method according to claim 1, wherein said object is stationary. 22. The method according to claim 1, further comprising applying frequency conversion. 23. A method for directing a laser pulse beam towards a selected area/surface of a moving object, comprising: a) extracting a leading portion of a pulsed laser beam reflected from at least part of the object that is illuminated by a pulsed laser beam having a first pulse duration;b) said extracting including applying selective phase conjugation and amplifying the leading portion of the received pulse beam, which portion is reflected from a first surface/area of the object which is the area of the object that defines the shortest optical path between the optical transmitter module, the object and the optical receiver module, thereby generating an amplified phase conjugated pulsed beam at a second pulse duration and redirecting it to said selected area or to an area shifted by a aerial shift extent relative to said selected area. 24. A system for directing a laser pulsed beam towards a selected area/surface of an object, comprising: a laser assembly that includes an optical transmitter module configured to transmit a pulsed laser beam having a first pulse duration and illuminating therewith an area/surface of the object, thereby obtaining a reflected pulsed laser beam; said reflected pulsed laser beam including a leading portion reflected from a first reflecting area/surface of the object which is the area of the object that defines the shortest optical path between the optical transmitter module, the object and an optical receiver module;a second laser assembly that includes a transmitter module, said optical receiver module, an optical amplifier associated with a phase conjugation mirror module configured to receive through said receiver module said reflected pulsed laser beam and converting it, utilizing at least said amplifier and phase conjugation modules, into an amplified phase conjugated pulsed beam of a second pulse duration; said second laser assembly is configured to transmit through said transmitter module said amplified phase conjugated pulsed beam and illuminating therewith on selected area/surface of the object. 25. The system according to claim 24, wherein said selected area being said first reflecting area/surface of the object. 26. The system according to claim 24, further comprising a shifter configured to angularly shift said amplified phase conjugated pulsed beam by a given shift extent, and wherein said selected area being said first reflecting area/surface of the object shifted dependent upon said shift extent. 27. The system according to claim 24, wherein said first pulse duration falls in a nano-second range. 28. The system according to claim 24, wherein said second pulse duration falls in a pico-second range. 29. The system according to claim 24, wherein said optical amplifier is substantially depleted from preceding pumping after said amplified phase conjugated pulse beam that corresponds to said leading portion of the reflected pulse beam is generated. 30. The system according to claim 24, further comprising a frequency converter for applying frequency conversion. 31. The system according to claim 24, wherein said phase conjugation mirror module is selected from the group that includes Stimulated Brillouin Scattering (SBS) and Stimulated Raman Scattering (SRS). 32. The system according to claim 24, further comprising a non-linear optical compressor for generating pulsed beam with different pulse duration than the pulse duration of the received pulsed beam. 33. The system according to claim 32, wherein said non-linear optical compressor is incorporated in said phase conjugation module. 34. The system according to claim 24, wherein an optical module that functions as both said transmitter optical module and said receiver optical module is common to said laser assembly and second laser assembly. 35. The system according to claim 24, wherein the dimension of said phase conjugation module along the pulsed beam propagation path complies with said pulse duration. 36. The system according to claim 35, wherein said dimension being in one or few millimeter range for pico-seconds pulse durations that falls in the range of 1 to 100 pico-seconds. 37. The system according to claim 24, wherein the lifespan of the phase conjugation module is selected in compliance with the pulse duration of the received pulse laser beam. 38. The system according to claim 37, wherein a pulse duration that falls in the range of 1 to 100 ps complies with short lived phase conjugation module. 39. The system according to claim 37, wherein a pulse duration that falls in the range of 1 to 100 ns complies with a long lived phase conjugation module. 40. The system according to claim 24, further comprising: a preliminary laser assembly that includes an optical transmitter module configured to transmit a preliminary pulsed laser beam having a preliminary pulse duration and illuminating therewith a sector that embraces an area of uncertainty where the object is possibly located to thereby obtain a pulsed laser beam reflected from said area/surface of the object; said laser assembly includes an optical amplifier associated with phase conjugation mirror module and is configured to receive through said receiver module said reflected pulsed laser beam and converting it, utilizing at least said amplifier associated with phase conjugation mirror module, into amplified phase conjugated pulsed beam to thereby generate said pulsed laser beam of said first pulse duration. 41. The method according to claim 3, wherein the angular shifting of said amplified phase conjugated pulse beam is brought about by angularly shifting the reflected pulse beam.
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이 특허에 인용된 특허 (16)
Lintell Robert J. (Altadena CA) Campbell James D. (Pasadena CA), Active optical tracking system.
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