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We experimentally investigate the Lamb coupling constant C in InGaAlAs Quantum Wells active medium. An Optically-Pumped Vertical-External-Cavity Surface-Emitting Laser emitting at 1.54 mu m is designed to sustain the oscillation of two orthogonally polarized modes sharing the same active region while separated by 1 mm in the rest of the cavity. It enables to tune independently the two wavelengths and to apply differential losses in order to directly measure the coupling constant. We found C to he almost constant and equal to 0.839 +/- 0.023 for a wavelength difference between the two eigenmodes ranging from 0.36 nm up to 10.8 nm.
Elyahou Kapon, Grigore Suruceanu, Alexandru Mereuta, Andrei Caliman, Nicolas Chevalier
Elyahou Kapon, Alexandru Mereuta, Andrei Caliman, Salvatore Pes