Tsu-Chiang Yen

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This work presents a novel self-seeding configuration of the vertical-cavity surface-emitting laser (VCSEL) without classical wavelength selective elements. A multimode VCSEL shows stable single transverse mode operation in this configuration. The extremely simple setup consists merely of the commercial VCSEL, an iris, and a plane mirror, in which the(More)
Mode hopping is characterized by a stochastic exchange of power between two longitudinal modes of a laser, inducing a high-level intensity noise in the laser's output. This investigation proposes an orthogonal-polarization optical feedback (OPF) method to suppress mode hopping in semiconductor lasers. Experimental results indicated that, under some(More)
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