Guided-wave measurement of the 1.06-μm two-photon absorption coefficient in GaAs epitaxial layers
Abstract
The optical perturbation of an infrared wave guided in a GaAs epitaxial layer allows us to measure the two-photon absorption coefficient β for the wavelength λ=1.06 μm. The use of optical properties of free carriers induced by the two-photon effect and of guided optical wave techniques strongly enhances method accuracy. The result (β=0.06 cm MW-1) is in good agreement with the most recent bulk measurements and the theoretical values.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- January 1978
- DOI:
- 10.1063/1.324374
- Bibcode:
- 1978JAP....49...24A
- Keywords:
-
- Gallium Arsenides;
- Infrared Absorption;
- Optical Waveguides;
- Photon Absorptiometry;
- Epitaxy;
- Light Transmission;
- Photoabsorption;
- Solid-State Physics;
- 42.65.Gv;
- 78.20.Dj