high efficiency fiber coupling with coupling efficiencies between 60% and 85% into single- mode polarization maintaning optical fibers. Optical isolators and angled fiber connectors

Littman / Metcalf Tunable External Cavity Diode Laser, 630nm .. 2450nm, up to 100mW, patented technology, hands-off operation, large mode-hop free piezo tuning range, narrow linewidth, free space and fiber coupled versions. Check our ar-coated diode stock list for availability. Specification are subject to change without notice.

该激光器采用改进型Littman-Metcalf结构，选用刻线密度为450 line/mm的光栅作为外部谐振腔的调谐元件，增益芯片是具有窄脊波导结构的级联泵浦GaSb芯片，如 图9所示。该激光器室温下连续波输出功率达到8 mW，波长调谐范围超过了300 nm (3 µm波段)。

high efficiency fiber coupling with coupling efficiencies between 40% and 70% into single-mode polarization maintaning optical fibers. 60 dBOptical isolators and angled fiber connectors (FC/APC couplers) are available upon request. Typical Values: Power: > 1000 mW M 2 = 1.4 in both directions Side Mode Supression Beam Quality 779 780 781 782 783

公司生产的Littman /Metcalf型和Littrow型可调谐 外腔半导体激光器 系统，其主要由可调谐外腔式半导体激光器和半导体激光控制器两部分组成。 该两款激光器系统具有优越的构造灵活性和高稳定性，操作方便,波段选择灵活。 其中Littman /Metcalf型工作波长范围630nm-2450nm可选，窄线宽，功率最高可达100mW；而Littrow型激光器系统工作波长范围覆盖370nm-1770nm，可提供高达200mW的高输出功率、窄线宽和高达30GHz的无模跳自由调谐范围。

Littman & Littrow Lasers are Tunable external cavity diode lasers. Both types of laser has high passive stability; realizing the pivot axis of the tuning grating and the cavity adjustments via flex-mounts ensures the highest passive stability of our Littrow/Littman laser system.

This stylish Tungsten and Carbon Fiber Ring from Littman Jewelers is designed for men seeking a modern and durable accessory. The ring's sleek design is complemented by its sturdy materials, ensuring both longevity and a contemporary look.

Abstract: In recent years, tunable external cavity semiconductor lasers in the near-infrared band have important application value in fields such as fiber optic communication, spectral analysis, and medicine. This article introduces the basic structure and working principle of a Littman tunable external cavity semiconductor laser.

Choose from our advanced range, including Littmann CORE Digital, 3M ™ Littmann ® Cardiology IV ™ and 3M™ Littmann ® Classic III ™ Stethoscopes. We equip you with the tools that are crucial to patient care. From classic to cardiology-specific stethoscopes, 3M Littmann Stethoscopes helps you assess, monitor and diagnose with precision.