Design of a free-space image-relay optical time-domain reflectometer to measure fiber-optic time delays at inertial confinement fusion relevant wavelengths
- Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Fiber optics are an integral part of data collection, often used to transport visible and UV light to streaked spectrometers and photodetectors. Precisely measuring fiber-optic time delay (FOTD) is necessary for absolute data timing or fiber replacement. An optical time domain reflectometer (OTDR) can be used to measure the fiber-optic time delay. Commercial OTDR’s measure only the fiber in telecommunications wavelengths in the IR. To measure fibers at relevant wavelengths for inertial confinement fusion experiments, a solution using a free-space image relay was devised at the University of Rochester’s Laboratory for Laser Energetics (LLE), where readily available equipment has been used to measure the FOTD to within 2 ps at 526.5 nm as well as 351 nm, which is an order of magnitude better than the timing jitter between LLE’s Hardware Timing System and second-harmonic (526.5-nm) fiducial laser pulses.
- Research Organization:
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Contributing Organization:
- Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
- Grant/Contract Number:
- NA0003856
- OSTI ID:
- 1568764
- Journal Information:
- Proceedings of SPIE - The International Society for Optical Engineering, Vol. 11114; Conference: SPIE Optical Engineering and Applications, San Diego, CA (United States), 11-15 Aug 2019; ISSN 0277-786X
- Publisher:
- SPIECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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