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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) LBNL
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. Tue . "Optical synchronization system for femtosecond X-ray sources". United States. doi:. 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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 13 00:00:00 EST 2011},
month = {Tue Dec 13 00:00:00 EST 2011}
}

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