Mid-infrared transmission properties of amorphous germanium optical fibers
نویسندگان
چکیده
Germanium optical fibers have been fabricated using a high pressure chemical deposition technique to deposit the semiconductor material inside a silica capillary. The amorphous germanium core material has a small percentage of hydrogen that saturates the dangling bonds to reduce absorption loss. Optical transmission measurements were performed to determine the linear losses over a broad mid-infrared wavelength range with the lowest loss recorded at 10.6μm. The extended transmission range measured in the germanium fibers demonstrates their potential for use in mid-infrared applications.
منابع مشابه
Glass-clad single-crystal germanium optical fiber.
Long lengths (250 meters) of a flexible 150 microm diameter glass-clad optical fiber containing a 15 microm diameter crystalline and phase-pure germanium core was fabricated using conventional optical fiber draw techniques. X-ray diffraction and spontaneous Raman scattering measurements showed the core to be very highly crystalline germanium with no observed secondary phases. Elemental analysis...
متن کاملEfficient dielectric metasurface collimating lenses for mid-infrared quantum cascade lasers.
Light emitted from single-mode semiconductor lasers generally has large divergence angles, and high numerical aperture lenses are required for beam collimation. Visible and near infrared lasers are collimated using aspheric glass or plastic lenses, yet collimation of mid-infrared quantum cascade lasers typically requires more costly aspheric lenses made of germanium, chalcogenide compounds, or ...
متن کاملNonlinear applications in the mid-infrared regime based on germanium on silicon platform
germanium on silicon platform L. Shen, N. Healy, C. J. Mitchell, J. S. Penades, M. Nedeljkovic, G. Z. Mashanovich and A. C. Peacock Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China c...
متن کاملتأثیر ساختار بس لایه بر ساختار و فوتولومینسانس لایههای نازک اکسید ژرمانیوم
Amorphous GeOx/SiO2 multilayers (1<x<2) were prepared by successive evaporation of GeO2 and SiO2 powders onto the Si substrates maintained at 100°C. Structural study by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared-absorption (FTIR) spectrometry, and transmission electron microscopy (TEM) was carried out. These techniques allowed us to follow the structural evolution, and...
متن کاملColloidal synthesis of germanium nanocrystals
In this study, colloidal germanium nanocrystals were synthesized by a simple and novel method, and their optical properties were also studied. Polyvinyl alcohol (PVA) as a surface modifier was used to control the optical properties of colloidal Ge nanocrystals. Fourier transform infrared spectroscopy (FTIR) analysis was performed to identify the various functional groups present in the sample. ...
متن کامل