Hollow core and other infrared waveguides for instrumentation in intense radiation environments.

Weiss, Jonathan David

Sandia National Laboratories

关键词: Steady-State Conditions;    Irradiation;    Waveguides;    Radiation Effects;    Spectroscopy;   

DOI  :  10.2172/1029799
RP-ID  :  SAND2007-7085
RP-ID  :  AC04-94AL85000
RP-ID  :  1029799

美国|英语

来源: UNT Digital Library

【 摘 要 】

The purpose of this LDRD was to study the effect of steady-state neutron and gamma irradiation on the transmission of waveguides designed to operate well in the near- or mid-IR region of the electromagnetic spectrum. In this context, near-IR refers to the region between 1.3 {mu}m and about 2.4 {mu}m, and mid-IR between 3.0 {mu}m and 4.5 {mu}m. Such radiation environments could exist in nuclear power plants or nuclear weapons. Pulsed and steady-state radiation effects had been extensively studied on silica-based optical fibers because they have been the most readily available, most widely used in communications and sensing, and the least expensive. However, silica-based fibers do not transmit well beyond about 1.8 {mu}m and they are virtually opaque in the mid-IR. The mid-IR, as defined above, and beyond, is where vibrational spectroscopy is carried out. This type of sensing is one important application of infrared optical fibers.