Method and system for transmitting light

Patent metadata

Field	Value
Publication number	US-9544065-B2
Application number	US-201414327702-A
Country	US
Kind code	B2
Filing date	Jul 10, 2014
Priority date	Jul 11, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A method of transmitting light is disclosed. The method comprises: transmitting a first light pulse into a medium to form in the medium a filamented region that is capable of guiding light, and transmitting a second light into the filamented region, wherein the second light is a pulsed light or continues wave light, and wherein the second light is transmitted at least 10 nanoseconds after the first light pulse.

First claim

What is claimed is:

1. A method of transmitting light, comprising:
transmitting a first light pulse into a medium to form in said medium a filamented region characterized by a refractive index higher than a refractive index of said medium in the absence of said light pulse; and
transmitting a second light pulse into said filamented region, at an angle selected to effect a two-dimensional spatial confinement of said second tight pulse in said filamented region such that said second light pulse is guided by said filamented region,
wherein said second light pulse is transmitted at least 10 nanoseconds after said first light pulse.

2. A method of processing a material comprising executing the method of claim 1 and directing said first and said second light pulses onto the material.

3. The method of claim 2 , wherein the material is a solid substrate and said second light pulse is selected to form a scribed region onto a surface of said substrate.

4. The method of claim 2 , wherein the material is a solid substrate transparent to said light pulses and wherein said second light pulse is selected to form a scribed region buried under an external surface of said substrate.

5. The method of claim 2 , wherein said second light pulse is selected to at least partially melt or evaporate the material.

6. The method of claim 2 , wherein said second light pulse is selected for destructing an object which comprises the material and is located at a remote location.

7. The method of claim 1 , being executed so as to induce water condensation in said medium.

8. The method according to claim 1 , wherein said first light pulse and said second light pulse are transmitted from the same location.

9. The method according to claim 1 , wherein said first light pulse and said second light pulse are transmitted from different locations.

10. A system for transmitting light, comprising:
at least one light source configured for transmitting light pulses; and
a controller configured for activating said at least one light source to transmit a first light pulse into a medium to form in said medium a filamented region characterized by a refractive index higher than a refractive index of said medium in the absence of said light pulse, and to transmit a second light pulse into said filamented region at an angle selected to effect a two-dimensional spatial confinement of said second light pulse in said filamented region such that said second light pulse is guided by said filamented region,
wherein said second light pulse is transmitted at least 10 nanoseconds after said first light pulse.

11. The system of claim 10 , wherein said at least one light source comprises a first light source for transmitting said first light pulse, and a second light source for transmitting said second light pulse.

12. The system of claim 10 , wherein said at least one light source comprises one light source for transmitting both said first light pulse and said second light pulse.

13. An optical communication system, comprising the system according to claim 10 .

14. A system for processing a material comprising the system according to claim 10 .

15. The method or system according to claim 1 , wherein said second light pulse is transmitted at least 100 nanoseconds after said first light pulse.

16. The method or system according to claim 1 , wherein a duration of said first light pulse is less than one picosecond.

17. The method or system according to claim 1 , wherein said first light pulse has energy of at least 100 microjoule.

18. A method of generating a refractive index pattern, comprising:
transmitting first pump pulse into a medium along a first direction, and a second pump pulse into said medium along a second direction, each of said first and said second pump pulses being selected to effect a transient change in the refractive index of said medium;
wherein said first and said second directions are selected to intersect each other at an intersection region, and to form in said intersection region a refractive index pattern corresponding to an interference pattern of said pump pulses;
wherein the method comprise transmitting probe light to said refractive index pattern to effect diffraction of said probe light by said refractive index pattern.

19. A method of transmitting light, comprising:
transmitting a first light pulse into a medium to form in said medium a filamented region capable of guiding light; and
transmitting a continuous light into said filamented region, at an angle selected to effect a two-dimensional spatial confinement of said continuous light in said filamented region such that said continuous light is guided by said filamented region,
wherein said continuous light is transmitted at least 10 nanoseconds after said first light pulse.

20. A system for transmitting light, comprising:
at least one light source configured for transmitting light pulses; and
a controller configured for activating said at least one light source to transmit a first light pulse into a medium to form in said medium a filamented region capable of guiding light, and to transmit a continuous light into said filamented region, at an angle selected to effect a two-dimensional spatial confinement of said continuous light in said filamented region such that said continuous light is guided by said filamented region,
wherein a diameter of a focal point of said first light pulse is from about 50 μm to about 200 μm, and wherein said continuous light is transmitted at least 10 nanoseconds after said first light pulse.

21. An optical communication system, comprising the system according to claim 20 .

22. A system for processing a material comprising the system according to claim 20 .

23. The method of claim 1 , wherein a diameter of a focal point of said first light pulse is from about 50 μm to about 200 μm.

24. The system of claim 10 , wherein a diameter of a focal point of said first light pulse is from about 50 μm to about 200 μm.

25. The method of claim 19 , wherein a diameter of a focal point of said first light pulse is from about 50 μm to about 200 μm.

26. The system of claim 20 , wherein a diameter of a focal point of said first light pulse is from about 50 μm to about 200 μm.

27. The method of claim 18 , wherein said probe light encodes an optical communication signal, and wherein said interference pattern is selected to redirect said optical communication signal to a remote optical communication receiver.

Assignees

• Technion Res & Dev Foundation

Inventors

• Segev Mordechai
• Cohen Oren
• Levi Liad

Classifications

• H04B10/80 Primary

  Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water · CPC title