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Title: Optical synchronization system for femtosecond X-ray sources

Abstract

Femtosecond pump/probe experiments using short X-Ray and optical pulses require precise synchronization between 100 meter-10 km separated lasers in a various experiments. 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 various implementations. 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 two single-frequency lasers separated by several teraHertz will be lock 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.

Inventors:
 [1];  [2]
  1. El Cerrito, CA
  2. Munich, DE
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1034294
Patent Number(s):
8,078,060
Application Number:
11/696,591
Assignee:
The Regents of The University of California (Oakland, CA)
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Wilcox, Russell B, and Holzwarth, Ronald. Optical synchronization system for femtosecond X-ray sources. United States: N. p., 2011. Web.
Wilcox, Russell B, & Holzwarth, Ronald. Optical synchronization system for femtosecond X-ray sources. United States.
Wilcox, Russell B, and Holzwarth, Ronald. 2011. "Optical synchronization system for femtosecond X-ray sources". United States. https://www.osti.gov/servlets/purl/1034294.
@article{osti_1034294,
title = {Optical synchronization system for femtosecond X-ray sources},
author = {Wilcox, Russell B and Holzwarth, Ronald},
abstractNote = {Femtosecond pump/probe experiments using short X-Ray and optical pulses require precise synchronization between 100 meter-10 km separated lasers in a various experiments. 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 various implementations. 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 two single-frequency lasers separated by several teraHertz will be lock 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 = {},
url = {https://www.osti.gov/biblio/1034294}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {12}
}

Works referenced in this record:

Long term comparison of two fiber based frequency comb systems
journal, January 2005


Progress in Large-Scale Femtosecond Timing Distribution and RF-Synchronization
conference, January 2005


Synchronizing Lasers Over Fiber by Transmitting Continuous Waves
conference, May 2007


Optical Synchronizations Systems for Femtosecond X-Ray Sources
conference, January 2005


Long-Distance Frequency Dissemination with a Resolution of 10 17
journal, May 2005


A high stability, low noise RF distribution system
conference, January 2001


Long-term femtosecond timing link stabilization using a single-crystal balanced cross correlator
journal, January 2007


Ultralow-jitter passive timing stabilization of a mode-locked Er-doped fiber laser by injection of an optical pulse train
journal, January 2006


Fiber-laser frequency combs with subhertz relative linewidths
journal, January 2006


Fligh-frequency local oscillator transmission for the atacama large millimeter array (ALMA)
conference, January 2005


Subfemtosecond timing jitter between two independent, actively synchronized, mode-locked lasers
journal, January 2002


Mode-locked laser pulse trains with subfemtosecond timing jitter synchronized to an optical reference oscillator
journal, January 2003


Coherent optical link over hundreds of metres and hundreds of terahertz with subfemtosecond timing jitter
journal, May 2007


Precise frequency transfer through a fiber network by use of 15-µm mode-locked sources
journal, January 2004


Remote transfer of a high-stability and ultralow-jitter timing signal
journal, January 2005


Synchronization of mode-locked femtosecond lasers through a fiber link
journal, January 2006