Woods Jonathan R C, Gorecki Jon, Bek Roman, Richardson Stephen C, Daykin Jake, Hooper Grace, Branagan-Harris Emelia, Tropper Anne C, Wilkinson James S, Jetter Michael, Michler Peter, Apostolopoulos Vasilis
Opt Express. 2022 Aug 29;30(18):32174-32188. doi: 10.1364/OE.457577.
Coherent laser arrays compatible with silicon photonics are demonstrated in a waveguide geometry in epitaxially grown semiconductor membrane quantum well lasers transferred on substrates of silicon carbide and oxidised silicon; we record lasing thresholds as low as 60 mW of pump power. We study the emission of single lasers and arrays of lasers in the sub-mm range. We are able to create waveguide laser arrays with modal widths of approximately 5 - 10 µm separated by 10 - 20 µm, using real and reciprocal space imaging we study their emission characteristics and find that they maintain their mutual coherence while operating on either single or multiple longitudinal modes per lasing cavity.
在转移到碳化硅和氧化硅衬底上的外延生长半导体膜量子阱激光器的波导结构中，展示了与硅光子学兼容的相干激光阵列；我们记录到泵浦功率低至60毫瓦的激光阈值。我们研究了亚毫米范围内单个激光器和激光器阵列的发射情况。我们能够制造出模式宽度约为5 - 10微米、间距为10 - 20微米的波导激光阵列，利用实空间和倒易空间成像技术研究它们的发射特性，发现它们在每个激光腔以单纵模或多纵模工作时都能保持相互相干性。
