Open AccessSmall oxide‐free vertical‐cavity surface‐emitting lasers with high efficiency and high power
Author(s) -
Yang Xu,
Li Ming Xin,
Zhao Guowei,
Freisem Sabine,
Deppe Dennis G.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.3352
Subject(s) - materials science , laser , slope efficiency , optics , optoelectronics , reproducibility , power (physics) , semiconductor laser theory , detective quantum efficiency , quantum efficiency , semiconductor , physics , fiber laser , mathematics , quantum mechanics , statistics , image quality , artificial intelligence , computer science , image (mathematics)
Data are presented showing high external differential quantum efficiency (DQE) and record‐high output power in vertical‐cavity surface‐emitting lasers (VCSELs) with diameters below 3 µm. Good uniformity and reproducibility are achieved in devices with very small sizes. Over 75% DQEs are measured with maximum output powers of 5, 7.3, 8, 8.7 and 11.6 mW for 1, 1.5, 2, 2.5 and 3 µm diameter VCSELs, respectively.