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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

1 2021

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First vertical-cavity surface-emitting laser made entirely in Poland

Gębski Marcin, Śpiewak Patrycja, Kołkowski Walery, Pasternak Iwona, Głowadzka Weronika, Nakwaski Włodzimierz, Sarzała Robert P., Wasiak Michał, Czyszanowski Tomasz, Strupiński Włodzimierz

Bulletin of the Polish Academy of Sciences. Technical Sciences

2021

Vol. 69, nr 3

art. no. e137272

The paper presents the first vertical-cavity surface-emitting lasers (VCSELs) designed, grown, processed and evaluated entirely in Poland. The lasers emit at »850 nm, which is the most commonly used wavelength for short-reach (<2 km) optical data communication across multiple-mode optical fiber. Our devices present state-of-the-art electrical and optical parameters, e.g. high room-temperature maximum optical powers of over 5 mW, laser emission at heat-sink temperatures up to at least 95°C, low threshold current densities (<10 kA/cm2) and wall-plug efficiencies exceeding 30% VCSELs can also be easily adjusted to reach emission wavelengths of around 780 to 1090 nm.