Single-Mode Fabry-Pérot Quantum Cascade Lasers at λ~10.5 μm

• 作者: Jinchuan Zhang Junqi Liu Ning Zhuo Shenqiang Zhai Shouzhu Niu Xiaohua Wang Zhipeng Wei
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 工学
• 关键词: Quantum CASCADE Laser Long Wave INFRARED Double PHONON Resonance
• 年，卷（期）: clkxyhxgcyw_2020,（3）
• 页码范围: 85-91
• 页数: 7页
• 分类号: TN2

摘要

In this paper, we report a single-mode Fabry-Pérot long wave infrared quantum cascade lasers based on the double phonon resonance active region design. For room temperature CW operation, the wafer with 35 stages was processed into buried heterostructure lasers. For a 4 mm long and 13 μm wide laser with high-reflectivity (HR) coating on the rear facet, continuous wave output power of 43 mW at 288 K and 5 mW at 303 K is obtained with threshold current densities of 2.17 and 2.7 kA/cm2. The lasing wavelength is around 10.5 μm. Single mode emission was observed for this particular device over the whole investigated current and temperature range.