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Title: Optical Synchronization Systems for Femtosecond X-raySources

Abstract

In femtosecond pump/probe experiments using short X-Ray and optical pulses, precise synchronization must be maintained between widely separated lasers in a synchrotron or FEL facility. We are developing synchronization systems using optical signals for applications requiring different ranges of timing error over 100 meter of glass fiber. For stabilization in the hundred femtosecond range a CW laser is amplitude modulated at 1 10 GHz, the signal retroreflected from the far end, and the relative phase used to correct the transit time with a piezoelectric phase modulator. For the sub-10 fsec range the laser frequency itself is upshifted 55 MHz with an acousto-optical modulator, retroreflected, upshifted again and phase compared at the sending end to a 110 MHz reference. Initial experiments indicate less than 1 fsec timing jitter. To lock lasers in the sub-10 fs range we will lock two single-frequency lasers separated by several tera Hertz to a master modelocked fiber laser, transmit the two frequencies over fiber, and lock two comb lines of a slave laser to these frequencies, thus synchronizing the two modelocked laser envelopes.

Authors:
; ;
Publication Date:
Research Org.:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org.:
USDOE Director. Office of Science. Office of High EnergyPhysics
OSTI Identifier:
878701
Report Number(s):
LBNL-57559
R&D Project: 455101; BnR: KA1501020; TRN: US0602435
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: 2005 Particle Accelerator Conference, Knoxville,TN, May 16 - 20, 2005
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; AMPLITUDES; FIBERS; GLASS; LASERS; METERS; STABILIZATION; SYNCHRONIZATION; SYNCHROTRONS; X-RAY SOURCES; synchroization fiber laser

Citation Formats

Wilcox, Russell, Staples, John W., and Holzwarth, Ronald. Optical Synchronization Systems for Femtosecond X-raySources. United States: N. p., 2004. Web.
Wilcox, Russell, Staples, John W., & Holzwarth, Ronald. Optical Synchronization Systems for Femtosecond X-raySources. United States.
Wilcox, Russell, Staples, John W., and Holzwarth, Ronald. Sun . "Optical Synchronization Systems for Femtosecond X-raySources". United States. doi:. https://www.osti.gov/servlets/purl/878701.
@article{osti_878701,
title = {Optical Synchronization Systems for Femtosecond X-raySources},
author = {Wilcox, Russell and Staples, John W. and Holzwarth, Ronald},
abstractNote = {In femtosecond pump/probe experiments using short X-Ray and optical pulses, precise synchronization must be maintained between widely separated lasers in a synchrotron or FEL facility. We are developing synchronization systems using optical signals for applications requiring different ranges of timing error over 100 meter of glass fiber. For stabilization in the hundred femtosecond range a CW laser is amplitude modulated at 1 10 GHz, the signal retroreflected from the far end, and the relative phase used to correct the transit time with a piezoelectric phase modulator. For the sub-10 fsec range the laser frequency itself is upshifted 55 MHz with an acousto-optical modulator, retroreflected, upshifted again and phase compared at the sending end to a 110 MHz reference. Initial experiments indicate less than 1 fsec timing jitter. To lock lasers in the sub-10 fs range we will lock two single-frequency lasers separated by several tera Hertz to a master modelocked fiber laser, transmit the two frequencies over fiber, and lock two comb lines of a slave laser to these frequencies, thus synchronizing the two modelocked laser envelopes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun May 09 00:00:00 EDT 2004},
month = {Sun May 09 00:00:00 EDT 2004}
}

Conference:
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