Continuous tuning of terahertz distributed feedback quantum cascade laser by gas condensation and dielectric deposition
Continuous tuning of terahertz distributed feedback quantum cascade laser by gas condensation and dielectric deposition
复制标题
通过气体冷凝和电介质沉积连续调谐太赫兹分布式反馈量子级联激光器
DOI：
10.1063/1.4803483
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发表时间：
2013
影响因子：
4
通讯作者：
J. Faist
中科院分区：
文献类型：
--
作者：
D. Turčinková;M. Amanti;F. Castellano;M. Beck;J. Faist
介绍了基于三阶分布反馈的太赫兹量子级联激光器的连续调谐。该电源提供低损耗功率(∼400 mW)和毫瓦级输出功率的单模发射。激光器通过氮气冷凝或电沉积进行调谐。前者提供了可逆的、可重复的、连续的无模式跳频调谐，频率为25 GHz，频率为3.3太赫兹(∼f/f )(Δf/f ∼ 0.75%)。后者便于对所需频率进行精确的后处理目标。
We present the continuous tuning of a terahertz quantum cascade laser based on 3rd order distributed feedback. This source provides a single mode emission with low dissipation power (∼400 mW) and milliwatt-level output power. The laser is tuned by nitrogen-gas condensation or by dielectric deposition. The former method offers a reversible, reproducible, and continuous mode-hop free tuning over 25 GHz at a frequency of ∼3.3 THz (Δf/f ∼ 0.75%). The latter is convenient for precise post-process targeting of a desired frequency.