Gamma Radiation Effects in Yb-Doped Optical Fiber
نویسندگان
چکیده
Determination of the radiation response of doped-fiber laser materials, systems and components to relevant ionizing radiation fluxes is central to the prediction of long-term fiber-based laser performance/survivability in adverse and/or space-based environments. It is well known that optical elements that are placed into orbit around the Earth experience harsh radiation environments that originate from trapped-particle belts, cosmic rays, and solar events. Of particular interest to optical materials is the continuous flux of gamma photons that the materials encounter. Such radiation exposure commonly leads to the formation of color centers in a broad range of optical materials. Such color center formation gives rise to changes in optical transmission, loss and luminescent band structure, and, thus, impacts long-term optical device performance. In this paper we will present the results of our investigation of gamma-radiation-induced photodarkening on the passive optical transmittance of a number of ytterbium(Yb-) doped optical fibers. We will discuss the evolution of the optical response of the fiber across the 1.0 to 1.6 micron wavelength window with increasing gamma exposure. Results indicate that these fibers exhibit reasonable radiation resistance to gamma exposures typical of a 5-year, low-earth-orbit environment. Maximum transmittance losses of less than 10% were observed for total gamma exposures of 2-5 krad (Si).
منابع مشابه
Thermoluminescence Response of Ytterbium-doped and Undoped of Silicon Optical Fiber Subjected to Photon Irradiation
Radiation effects of photon irradiation in Ytterbium-doped silica optical fibers are still much less explored despite their importance in space-based application as radiation dosimetry. This study investigates and compares the thermoluminescence glow curve, response, linearity and sensitivity of Ytterbium-doped SiO2 optical fibers with that of TLD-100. Samples are placed in solid phantom and ir...
متن کاملBehavior of Random Hole Optical Fibers under Gamma Ray Irradiation and Its Potential Use in Radiation Sensing Applications
Effects of radiation on sensing and data transmission components are of great interest in many applications including homeland security, nuclear power generation, and military. A new type of microstructured optical fiber (MOF) called the random hole optical fiber (RHOF) has been recently developed. The RHOFs can be made in many different forms by varying the core size and the size and extent of...
متن کاملHigh-efficiency fiber laser at 1018 nm using Yb-doped phosphosilicate fiber.
A high-efficiency fiber laser at 1018 nm using homemade Yb-doped phosphosilicate fiber is demonstrated. The fiber shows blueshifted emission spectrum compared to Yb-doped aluminosilicate fiber, and is considered favorable for the short wavelength Yb-doped fiber laser. With a 7 m gain fiber, up to 22.8 W output at 1018 nm is achieved with an optical efficiency of 53%. The amplified spontaneous e...
متن کاملRadiation Resistant Erbium Doped Fiber for ASE Source and Fiber Gyroscope Application
A radiation resistant optical fiber used in a broadband source is presented. Both ASE source and Fiber Optical Gyroscope (FOG) commonly used in space missions, suffer from failures and degradation after long term exposure to radiative environment. The aim of this article is to present the results of our investigation on fiber and ASE source architecture in order to design a Radiation Resistant ...
متن کاملMid-infrared difference-frequency generation source pumped by a 1.1–1.5-mu m dual-wavelength fiber amplifier for trace-gas detection
Continuous-wave mid-infrared radiation near 3.5 mm is generated by difference-frequency mixing of the output of a compact 1.1 1.5-mm dual-wavelength fiber amplif ier in periodically poled LiNbO3. The diode sidepumped amplif ier is constructed with double-cladding Yb-doped fiber followed by single-mode Er/Yb codoped fiber. Output powers of as much as 11 mW at 3.4 mm are obtained, and spectroscop...
متن کامل