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Novel active MMI bi-stable laser diodes are proposed and demonstrated. Using partly saturable-absorber configuration in active MMI, extremely wide hysteresis window of 94mA was achieved with 30fJ optical switching energy in 335??m total device length.
Using Nd3+ doped lanthanum-modified lead zirconate titanate (PLZT) ceramic gain media which possess excellent electro-optic effects and wide optical transmission window, ceramic lasers of revolutionary nature have been implemented without any extra foreign active components.
Integrated optical RAM showed extremely wide and uniform hysteresis windows of 32 mA plusmn 2 mA (with operation current around 70 mA) using novel active MMI-BLD, with relatively high ON/OFF ratio of 18 dB in 315 times 600 mum2 total device size.
A novel MMI-based bi-stable laser is proposed for realizing compact size. Relatively low operation current of 100 mA (8 mA hysteresis), and high ON/OFF optical power-ratio of 15 dB were successfully achieved (@L=550 mum).
In this letter, we demonstrate a vertical-cavity surface-emitting laser (VCSEL) with a petal-shaped light-emitting aperture, which is realized by the Zn-diffusion technique, at a wavelength of 850 nm. The demonstrated device behaves like a two-dimensional VCSEL array and each light-emitting unit can have high coherence of in-phase lasing to form a near fundamental supermode emission. The measured...
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