SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 23: Focus Session: Breakthroughs in wide-bandgap semiconductor laser diodes I

Mittwoch, 29. März 2023, 09:30–12:15, POT 251

Recently, a number of significant breakthroughs have taken place in the area of wide-bandgap semiconductor laser diodes. The exploration of the limits of III-nitride materials, the improved understanding of the optical and electronic properties allowed to push the lasing wavelength towards the UV-B and UV-C spectral range with AlGaN-based laser diodes emitting at record short wavelength near 270 nm and 300 nm. In addition, advanced designs and fabrication technologies have led to the realization of novel devices in the blue-violet and even UV spectral range such as low-threshold VCSELs, narrow-linewidth GaN-based DFB laser diodes and photonic crystal lasers. In this focus session we will review these recent developments and discuss the future challenges and application for these devices.

Organized by Tim Wernicke, Ulrich Schwarz, and Michael Kneissl

	09:30	HL 23.1	Hauptvortrag: Vertical-cavity surface-emitting lasers -- this is the way — •Å. Haglund, G. Cardinali, L. Persson, F. Hjort, J. Enslin, E. Torres, C. Kuhn, S. Graupeter, M. Grigoletto, M. A. Bergmann, N. Prokop, M. Guttmann, L. Sulmoni, N. Lobo Ploch, M. Cobet, T. Kolbe, J. Gustavsson, F. Nippert, I. Häusler, M. R. Wagner, J. Ciers, T. Wernicke, and M. Kneisl
	10:00	HL 23.2	Hauptvortrag: Towards GaN-based diode lasers with narrow linewidth and high reliability — •Sven Einfeldt, Erik Freier, Ji-Hye Kang, Hans Wenzel, Anna Mogilatenko, Johannes Glaab, Asmaa Abou-Shewarib, Veit Hoffmann, Johannes Enslin, Martin Guttmann, Saad Makhladi, Jörg Fricke, Olaf Brox, Mathias Matalla, Maria Norman-Reiner, Christoph Stölmacker, Markus Weyers, Luca Sulmoni, Michael Kneissl, Lukas Uhlig, and Ulrich T. Schwarz
	10:30	HL 23.3	Hauptvortrag: Use of wafer patterning for new functionalities of InGaN light emitters — •Anna Kafar, Ryota Ishii, Atsushi Sakaki, Kiran Saba, Conny Becht, Szymon Grzanka, Ulrich Schwarz, Mitsuru Funato, Yoichi Kawakami, and Piotr Perlin
	11:00		30 min. break
	11:30	HL 23.4	Time-dependent intensity and wavelength dynamics of blue laser diodes with wide quantum wells — •Jannina Tepaß, Lukas Uhlig, Mateusz Hajdel, Grzegorz Muziol, and Ulrich Theodor Schwarz
	11:45	HL 23.5	Single-mode lasing in optically pumped UVB VCSELs with circular relief structures — •Giulia Cardinali, Filip Hjort, Johannes Enslin, Munise Cobet, Michael A. Bergmann, Johan Gustavsson, Joachim Ciers, Tim Kolbe, Felix Nippert, Markus R. Wagner, Tim Wernicke, Åsa Haglund, and Michael Kneissl
	12:00	HL 23.6	P-Cladding Layer Utilizing Polarization Doping for Blue-Violet InGaN Laser Diodes — •Anna Kafar, Muhammed Aktas, Dario Schiavon, Szymon Stanczyk, Krzysztof Gibasiewicz, Szymon Grzanka, and Piotr Perlin