External cavity cascade diode lasers tunable from 3.05 to 3.25 μm
External cavity cascade diode lasers tunable from 3.05 to 3.25 μm
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外腔级联二极管激光器可调谐范围为 3.05 至 3.25μm
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
G. Belenky
中科院分区：
文献类型：
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作者：
Meng Wang;T. Hosoda;L. Shterengas;G. Kipshidze;Ming Lu;A. Stein;G. Belenky
抽象。设计并制作了基于Littrow结构、采用三级I型量子阱级联二极管激光增益元件的外腔可调谐中红外发射器。在20°C下，当外延面朝上安装在铜块上时，自支撑的7.5 μ m宽的脊形波导激光器在3.25 μm附近产生了超过30 mW的连续波功率。外腔激光器（ECL）采用2毫米长的增益芯片与直脊设计和抗/中性反射涂层面。在3.05 ~ 3.25 μm的光谱范围内，输出功率为几毫瓦，调谐范围约为25 meV。
Abstract. The external cavity tunable mid-infrared emitters based on Littrow configuration and utilizing three stages type-I quantum well cascade diode laser gain elements were designed and fabricated. The free-standing coated 7.5-μm-wide ridge waveguide lasers generated more than 30 mW of continuous wave power near 3.25 μm at 20°C when mounted epi-side-up on copper blocks. The external cavity lasers (ECLs) utilized 2-mm-long gain chips with straight ridge design and anti-/neutral-reflection coated facets. The ECLs demonstrated narrow spectrum tunable operation with several milliwatts of output power in spectral region from 3.05 to 3.25 μm corresponding to ∼25 meV of tuning range.