IP Library Granted Patent US 7,116,458
Granted Patent B2
US 7,116,458 · App. 11/076,374 · Granted Oct 3, 2006

Coherent generation, conversion, and modulation of electromagnetic radiation using shock waves or solitons propagating through polaritonic or excitonic materials

Assignee: Massachusetts Institute of Technology
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Quick Facts
Patent No.
US 7,116,458
App. No.
11/076,374
Granted
Oct 3, 2006
Kind
B2
Abstract

An optical modulator includes a crystal structure that exhibits polaritonic or excitonic behavior. A shock wave propagates through the crystal structure so as to optically modulate and manipulate a light signal propagating in the crystal structure.

Claims (33)

1. An optical modulator comprising:

a crystal structure that exhibits polaritonic or excitonic behavior; and

a shock wave that propagates through said crystal structure so as to optically manipulate a light signal propagating in said crystal structure.

2. The optical modulator of claim 1 , wherein said shock wave is generated using high intensity pulsed lasers.

3. The optical modulator of claim 1 , wherein said crystal structure comprises polarizable dipoles.

4. The optical modulator of claim 1 , wherein said shock wave travels with the speed of about 10 km/sec in said crystal structure.

5. The optical modulator of claim 3 , wherein said polarizable dipoles vary in frequency from 4.5 THz–35 THz behind the shock wave.

6. The optical modulator of claim 1 , wherein said shock wave comprises soliton-like pulses.

7. The optical modulator of claim 1 , wherein said soliton-like pulses are formed by ultrashort pulsed lasers.

8. The optical modulator of claim 1 , wherein said optical manipulation comprises optically modulating said light signal.

9. The optical modulator of claim 1 , wherein said optical manipulation comprises producing a coherent light signal.

10. A method of optical modulation of a light signal comprising:

providing a crystal structure that exhibits polaritonic or excitonic behavior; and

propagating a shock wave through said crystal structure so as to optically modulate and manipulate a light signal propagating in said crystal structure.

11. The method of claim 10 , wherein said shock wave is generated using high intensity pulsed lasers.

12. The method of claim 9 , wherein said crystal structure comprises polarizable dipoles.

13. The method of claim 9 , wherein said shock wave travels with the speed of about 10 km/sec in said crystal structure.

14. The method of claim 11 , wherein said polarizable dipoles vary in frequency from 4.5 THz–35 THz behind the shock wave.

15. The method of claim 10 , wherein said shock wave comprises soliton-like pulses.

16. The method of claim 10 , wherein said soliton-like pulses are formed by ultrashort pulsed lasers.

17. The method of claim 10 , wherein said optical manipulation comprises optically modulating said light signal.

18. The method of claim 10 , wherein said optical manipulation comprises producing a coherent light signal.

19. An optical isolator comprising:

a crystal structure that exhibits polaritonic or excitonic behavior;

a shock wave that propagates through said crystal structure so as to optically manipulate a light signal propagating in said crystal structure.

20. The optical isolator of claim 19 , wherein said shock wave is generated using high intensity pulsed lasers.

21. The optical isolator of claim 19 , wherein said crystal structure comprises polarizable dipoles.

22. The optical isolator of claim 19 , wherein said shock wave travels with the speed of about 10 km/sec in said crystal structure.

23. The optical isolator of claim 21 , wherein said polarizable dipoles vary in frequency from 4.5 THz–35 THz behind the shock wave.

24. The optical isolator of claim 19 , wherein said shock wave comprises soliton-like pulses.

25. The optical isolator of claim 19 , wherein said soliton-like pulses are formed by ultrashort pulsed lasers.

26. The optical isolator of claim 19 , wherein said optical manipulation comprises optically modulating said light signal.

27. The optical isolator of claim 19 , wherein said optical manipulation comprises producing a coherent light signal.

Assignments (3)
CONFIRMATORY LICENSE Recorded May 31, 2011
From: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 026359/0975 →
CONFIRMATORY LICENSE Recorded Sep 26, 2007
From: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 019878/0890 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 20, 2005
From: REED, EVAN; SOLJACIC, MARIN; JOANNOPOULOS, JOHN D.
To: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Reel/Frame 016695/0505 →
Continuity (2)
Provisional Application 6055112700 · Mar 8, 2004
Related Publication 20050231796A1 · Oct 20, 2005