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Self-organized phase-matched harmonic generation in optical fibers
1AT&T Bell Laboratories, Crawfords Corner Road, Holmdel, New Jersey 07733, USA.
Optics Letters
|September 11, 2009
Summary
Researchers generated second-harmonic light in optical fibers using specific laser wavelengths. This supports a mechanism for photoinducing alternating second-order nonlinearity in fibers.
Area of Science:
- Nonlinear Optics
- Materials Science
Background:
- Optical fibers typically exhibit negligible second-order nonlinearity due to their centrosymmetric structure.
- Second-order nonlinear effects are crucial for applications like frequency conversion.
Purpose of the Study:
- To demonstrate the photoinduction of a second-order nonlinearity in a single-mode optical fiber.
- To support a specific mechanism for achieving this induced nonlinearity.
Main Methods:
- Seeding a single-mode fiber with both 1.064-micrometer pump light and 532-nanometer harmonic light.
- Monitoring the generation of second-harmonic light.
Main Results:
- Successful generation of second-harmonic light was observed from the single-mode fiber.
- The process occurred within minutes of seeding.
Conclusions:
- The experimental results support the proposed mechanism for photoinducing an alternating second-order nonlinearity.
- This work opens possibilities for creating nonlinear optical effects in standard fiber optic components.
