METHOD FOR PRODUCING TERAHERTZ ELECTROMAGNETIC CARRIER WAVES

• US 20110103801A1
• Filed: 10/29/2008
• Published: 05/05/2011
• Est. Priority Date: 03/20/2008
• Status: Active Grant

• Current Assignee: Deutsche Telekom AG
• Original Assignee: Deutsche Telekom AG
• Inventors: Buse, Karsten, Knabe, Bastian, Kiessling, Jens, Sowade, Rosita, Breunig, Ingo
• Granted Patent: US 8,554,083 B2
• Time in Patent Office: Days
• US Class Current: 398/118
• CPC Class Codes: G02F 1/3534 Three-wave interaction, e.g. sum-difference frequency generation G02F1/3532 takes precedence
• CPC Class Codes: G02F 2203/13 involving THZ radiation
• CPC Class Codes: H01S 1/02 solid
• CPC Class Codes: H01S 3/08022 Longitudinal modes mode suppression using a plurality of resonators H01S3/082
• CPC Class Codes: H01S 3/083 Ring lasers fibre ring lasers H01S3/06791
• CPC Class Codes: H01S 3/1083 using parametric generation
• CPC Class Codes: H01S 3/30 using scattering effects, e.g. stimulated Brillouin or Raman effects
• CPC Class Codes: H04B 10/2575 Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
• CPC Class Codes: H04B 10/291 in which processing or amplification is carried out without conversion of the main signal from optical form
• CPC Class Codes: H04B 10/50 Transmitters

Abstract

A method for producing an electromagnetic carrier wave in the frequency range between 0.1 and 10 terahertz that is suitable for the wireless transmission of data includes generating, by an electromagnetic pump wave, at least two mixing waves with a defined frequency difference, the pump wave being configured to constitute one of the mixing waves; and producing an electromagnetic carrier wave by frequency mixing the mixing waves.

Claims

1-10. -10. (canceled)

11. A method for producing an electromagnetic carrier wave in a frequency range between 0.1 and 10 terahertz that is suitable for wireless transmission of data, the method comprising:

generating, by an electromagnetic pump wave, at least two mixing waves with a defined frequency difference, the pump wave being configured to constitute one of the mixing waves; and

producing an electromagnetic carrier wave by frequency mixing the mixing waves.

12. The method of claim 11 wherein a frequency of the pump wave is in approximately a frequency range of visible light.

13. The method of claim 11 wherein the step of generating comprises generating at least one of the mixing waves using a nonlinear optical generation process excited by the pump wave.

14. The method of claim 11 wherein the step of generating comprises a nonlinear optical generation process including a Raman scattering taking place within a nonlinear medium, wherein a Raman line is used as a second of the mixing waves, the second mixing wave being reproducibly shifted in frequency.

15. The method of claim 11 wherein the step of generating comprises using a laser process in an arrangement for generating the mixing waves, the arrangement including a resonator, wherein the laser generates first and second light waves with a frequency spacing between 0.1 and 10 THz.

16. The method of claim 11 further comprising modulating information onto the carrier wave for information transmission by amplitude, frequency, phase, and polarization modulation.

17. The method of claim 11 wherein the frequency missing includes difference frequency mixing.

18. A system for producing an electromagnetic carrier wave that is suitable for the wireless transmission of data, the system comprising:

a laser source configured to generate a pump wave;

a converter configured to generate at least two mixing waves with a defined frequency difference based on the pump wave, the pump wave being configured to constitute one of the mixing waves; and

a frequency mixer configured to mix the mixing waves into a carrier wave in a frequency range between 0.1 and 10 Terahertz.

19. The system of claim 18, wherein the laser source is configured to generate laser light with a frequency in or near a visible range.

20. The system of claim 18, wherein the laser source and converter are combined in a laser, and further comprising a resonator disposed in a beam path of the laser.

21. The system of claim 18, wherein the converter includes a nonlinear optical crystal configured to generate, by the pump wave, Raman scattering.