Room-temperature Distributed Feedback CsPbBr$_3$ Perovskite Laser Integrated on a Silicon Nitride Waveguide Platform

arXiv (Cornell University)

Abstract

Silicon photonic integrated circuits (PICs) require cost-effective laser sources that can be monolithically integrated. The low cost and low-temperature solution processability of metal halide perovskites (MHPs) make them attractive alternatives to established III-V compound semiconductors for on-chip laser sources in PICs. Cesium lead bromide (CsPbBr$_3$) perovskites are emerging materials for green light-emitting diodes and lasers. To date, amplified spontaneous emission (ASE) at room temperature has been frequently achieved in CsPbBr$_3$ thin films, while reports on lasing are more limited. Here, we demonstrate a first-order grating distributed feedback (DFB) CsPbBr$_3$ thin-film laser operating at room temperature. Planar hot-pressed (PHP)-CsPbBr$_}$, with a low ASE threshold of 14.5 $μ$Jcm$^{-2}$ under 0.3 nanosecond (ns) pump pulses, was monolithically integrated into a silicon nitride (Si$_3$N$_4$) waveguide platform via a compatible top-down patterning process. The first-order grating DFB PHP-CsPbBr$_3$ thin-film laser operated at 540 nm in the green spectral region, where III-V lasers have limitations, and exhibited a lasing threshold of 0.755 mJcm$^{-2}$ at room temperature. This work marks a significant step toward utilizing MHPs for on-chip green lasers in PICs for commercial applications.

Authors 10

1. Federico Fabrizi Aachen AMO GmbH

   Blumenthal Foundation · AMO (Germany) · RWTH Aachen University

   Affiliation as printed

   AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

   RWTH Aachen University , Templergraben 55 , Aachen , 52062 , Germany

2. Piotr Jacek Cegielski Aachen AMO GmbH

   Blumenthal Foundation · AMO (Germany)

   Affiliation as printed

   AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

3. Naho Kurahashi

   University of Wuppertal

   Affiliation as printed

   Bergische Universität Wuppertal , Gaußstraße 20 , Wuppertal , 42119 , Germany

4. Manuel Runkel

   University of Wuppertal

   Affiliation as printed

   Bergische Universität Wuppertal , Gaußstraße 20 , Wuppertal , 42119 , Germany

5. Cedric Kreusel

   University of Wuppertal

   Affiliation as printed

   Bergische Universität Wuppertal , Gaußstraße 20 , Wuppertal , 42119 , Germany

6. Bartos Chmielak Aachen AMO GmbH

   Blumenthal Foundation · AMO (Germany)

   Affiliation as printed

   AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

7. Stephan Suckow Aachen AMO GmbH

   Blumenthal Foundation · AMO (Germany)

   Affiliation as printed

   AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

8. Thomas Riedl

   University of Wuppertal

   Affiliation as printed

   Bergische Universität Wuppertal , Gaußstraße 20 , Wuppertal , 42119 , Germany

9. Surendra B. Anantharaman Aachen AMO GmbH

   Indian Institute of Technology Madras · Blumenthal Foundation · AMO (Germany)

   Affiliation as printed

   AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

   Low-dimensional Semiconductors Lab , Department of Metallurgical and Materials Engineering , Indian Institute of Technology Madras , Chennai 600036 , India

10. Max C. Lemme Aachen AMO GmbH

    Blumenthal Foundation · AMO (Germany) · RWTH Aachen University

    Affiliation as printed

    AMO GmbH , Otto-Blumenthal-Straße 25 , Aachen , 52074 , Germany

    RWTH Aachen University , Templergraben 55 , Aachen , 52062 , Germany