Nonlinear Guided Waves in Semiconductors: Induced Focusing and Directional Coupling,
Abstract
Recently, Agrawal suggested a novel focusing effect in a self-defocusing medium. The transverse spatial gradient of the field amplitude of a strong pump beam induces a refractive index profile that can result in focusing and deflection of a weak beam. Below the band edge of a semiconductor, the optical nonlinearity is self-defocusing; far enough above the decreased absorption, the nonlinearity is self-focusing, but the > 100 micron length and large absorption there (Alpha approx. = 1 micron/1) of a semiconductor waveguide result in no transmission. Hence induced focusing is especially intriguing in a passive semiconductor waveguide because self-focusing cannot occur.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 22, 1992
- Accession Number
- ADP007578
Entities
People
- C. L. Chuang
- G. Khitrova
- H. M. Gibbs
- Jin Xu
- Ramon U. Jin
Organizations
- University of Arizona