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:
-
- El Cerrito, CA
- Munich, DE
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1034294
- Patent Number(s):
- 8078060
- Application Number:
- 11/696,591
- Assignee:
- The Regents of The University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- 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. 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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