TY  - JOUR
AU  - Real, D.
AU  - Calvo, D.
AU  - Diaz, A.
AU  - Alves Garre, S.
AU  - Carretero, V.
AU  - Sanchez Losa, A.
AU  - Salesa Greus, F.
PY  - 2023
DA  - 2023//
TI  - An Ultra-Narrow Time Optical Pulse Emitter Based on a Laser: UNTOPEL
T2  - IEEE Trans. Nucl. Sci.
JO  - IEEE Transactions on Nuclear Science
SP  - 2364
EP  - 2372
VL  - 70
IS  - 10
PB  - Ieee-Inst Electrical Electronics Engineers Inc
KW  - Instrumentation electronics
KW  - neutrino telescope instrumentation
KW  - subnanosecond light source
KW  - time calibration instrument
AB  - Light sources that emit repetitive subnanosecond pulses are used in neutrino telescopes for time calibration. Optical pulses with an ultra-narrow (subnanosecond) width can replicate the light produced by neutrino interactions, and are an important calibration and test element. By measuring the time-of-flight of the light, it is possible to provide a relative time calibration for all the detector photomultipliers. This work presents the ultra-narrow time optical pulse emitter based on a laser (UNTOPEL), an instrument emitting ultra-short laser optical pulses with a duration of 500 ps, energies per pulse of four microjoules at a wavelength of 532 nm, and a timing precision of 400 ps. The UNTOPEL pulse intensity can be fine-tuned, which is a novelty and a significant advantage in those applications that need to illuminate light detectors located at different distances with the same light intensity. The UNTOPEL pulse intensity can be controlled remotely, allowing for its use in operating conditions where physical access is impossible or difficult. Moreover, it is easy to operate and can be easily controlled through an inter-integrated circuit bus. The UNTOPEL is a sound instrument used when subnanosecond pulses and variable energy emissions are needed.
SN  - 0018-9499
UR  - https://doi.org/10.1109/TNS.2023.3307448
DO  - 10.1109/TNS.2023.3307448
LA  - English
N1  - WOS:001098078200010
ID  - Real_etal2023
ER  -