A membrane external-cavity surface-emitting laser (MECSEL) with an InAs/InP quantum dot (QD) based gain region is demonstrated. The pumping scheme employs a 90° off-axis parabolic mirror to focus the diode laser pump beam to a nearly circular pump spot. With this pump arrangement, the QD MECSEL with SiC heat spreaders produced 320 mW output power at room temperature with direct emission in the near-infrared at 1.5 μm. We report a record value of 86 nm for the tuning range at this wavelength region, owing to a broad QD gain bandwidth and wide tunability in MECSELs.

中文翻译：

---

1.5μm量子点膜外腔面发射激光器

展示了具有基于 InAs/InP 量子点 (QD) 增益区域的膜外腔面发射激光器 (MECSEL)。泵浦方案采用 90° 离轴抛物面镜将二极管激光泵浦光束聚焦到近乎圆形的泵浦光斑。通过这种泵浦布置，带有 SiC 散热器的 QD MECSEL 在室温下产生 320 mW 的输出功率，并直接发射 1.5 μ m的近红外光 。由于 MECSEL 具有宽 QD 增益带宽和宽可调性，我们报告了该波长区域调谐范围的创纪录值 86 nm。