Imperial College London

ProfessorZulfikarNajmudin

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

z.najmudin Website

 
 
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Location

 

736Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Streeter:2018:10.1063/1.5027297,
author = {Streeter, M and Dann, S and Scott, JDE and Baird, C and Murphy, CD and Eardley, S and Smith, R and Rozario, S and Gruse, J and Mangles, SPD and Najmudin, Z and Tata, S and Krishnamurthy, M and Rahul, SV and Hazra, D and Pourmoussavi, P and Osterhoff, J and Hah, J and Bourgeois, N and Thornton, C and Gregory, CD and Hooker, CJ and Checkhlov, O and Hawkes, SJ and Parry, B and Marshall, V and Tang, Y and Springate, E and Rajeev, PP and Thomas, AGR and Symes, D},
doi = {10.1063/1.5027297},
journal = {Applied Physics Letters},
pages = {244101--1--244101--5},
title = {Temporal feedback control of high-intensity laser pulses to optimize ultrafast heating of atomic clusters},
url = {http://dx.doi.org/10.1063/1.5027297},
volume = {112},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - We describe how active feedback routines can be applied at limited repetition rate (5 Hz) to optimize high-power (P>10 TW) laser interactions with clustered gases. Optimization of x-ray production from anargon cluster jet, using a genetic algorithm, approximately doubled the measured energy through temporalmodification of the 150 mJ driving laser pulse. This approach achieved an increased radiation yield throughexploration of a multi-dimensional parameter space, without requiring detailedaprioriknowledge of thecomplex cluster dynamics. The optimized laser pulses exhibited a slow rising edge to the intensity profile,which enhanced the laser energy coupling into the cluster medium, compared to the optimally compressedFWHM pulse (40 fs). Our work suggests that this technique can be more widely utilized for control of intensepulsed secondary radiation from petawatt-class laser systems.
AU - Streeter,M
AU - Dann,S
AU - Scott,JDE
AU - Baird,C
AU - Murphy,CD
AU - Eardley,S
AU - Smith,R
AU - Rozario,S
AU - Gruse,J
AU - Mangles,SPD
AU - Najmudin,Z
AU - Tata,S
AU - Krishnamurthy,M
AU - Rahul,SV
AU - Hazra,D
AU - Pourmoussavi,P
AU - Osterhoff,J
AU - Hah,J
AU - Bourgeois,N
AU - Thornton,C
AU - Gregory,CD
AU - Hooker,CJ
AU - Checkhlov,O
AU - Hawkes,SJ
AU - Parry,B
AU - Marshall,V
AU - Tang,Y
AU - Springate,E
AU - Rajeev,PP
AU - Thomas,AGR
AU - Symes,D
DO - 10.1063/1.5027297
EP - 1
PY - 2018///
SN - 1077-3118
SP - 244101
TI - Temporal feedback control of high-intensity laser pulses to optimize ultrafast heating of atomic clusters
T2 - Applied Physics Letters
UR - http://dx.doi.org/10.1063/1.5027297
UR - https://aip.scitation.org/doi/10.1063/1.5027297
UR - http://hdl.handle.net/10044/1/60054
VL - 112
ER -