Profile

Career

BSc (New England), PhD (ANU)

Summary of expertise

• EUV/X-ray laser development
• Laser ablation
• Laser produced plasmas

Research

Overview

Research has centred around

• the development and study of X-ray lasers (wavelength ~5-30 nm) created by producing non-equilibrium plasmas using high powered optical pumping lasers
• the study of high power (~ TW), short pulse (< ps) optical laser interaction with matter.

This work has been undertaken after peer review for facility time at large installations in the UK (the Central Laser Facility, CLF) or in Europe.  More recent research has investigated using these lasers for applications and in investigating the potential of new generation of x-ray free electron lasers.

• Applications of Soft X-ray Lasers (PDF , 467kb) (A review of the applications of X-ray lasers)

Current projects

X-ray lasing?

Work on X-ray lasers is undertaken at the Central Laser Facility, Rutherford Appleton Laboratory, Post-graduate students undertake experiments there. The planning and analysis of the experiments is undertaken at the University of York. We have achieved the shortest wavelength saturated laser in these experiments. Lasing was produced at 5.9 nm in nickel-like dysprosium. The Guiness book of Records has given us a certificate recognising this feat, but so-far has declined to publish the work in the annual record book! However, the result has been published by Physical Review A (see http://publish.aps.org/abstract/PRA/v59/pR47)

Overheads of talk given at St. Feliu conference October 2001

Grants

• Summary of EPSRC grant: GR/L11809 : ‘X-RAY Lasers
• Summary of EPSRC grant: Opacity measurements at EUV wavelengths (PDF , 261kb) GR/T27280/01

Supervision

• Miss Natalie Barratt
• Miss Lauren Gartside
• Mr Tom Morgan
• Mr Andrew Rossall
• Dr Erik Wagenaars
• Dr David Whittaker
• Miss Lucy Wilson

Publications

Full publications list

2010

Rossall A. K., Gartside L. M. R., Chaurasia S., et al.
X-ray back-lighter characterization for iron opacity measurements using laser-produced aluminium K-alpha emission
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS Volume: 43 Issue: 15 Special Issue: SI Pages: - Article Number: 155403 DOI: 10.1088/0953-4075/43/15/155403 Published: AUG 14 2010

2009

Whittaker D. S., Tallents G. J.
Iron opacity predictions under solar interior conditions
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Volume: 400 Issue: 4 Pages: 1808-1813 DOI: 10.1111/j.1365-2966.2009.15523.x Published: DEC 21 2009

Chaurasia S., Munda D. S., Tripathi S., et al.
Effect of the laser focus position on characteristics of X-ray and ion emission from gold plasmas generated by a sub-nanosecond laser
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS Volume: 267 Issue: 23-24 Pages: 3611-3616 DOI: 10.1016/j.nimb.2009.09.030 Published: DEC 2009

Huang H., Tallents G. J.
The output of a laser amplifier with simultaneous amplified spontaneous emission and an injected seed
LASER AND PARTICLE BEAMS Volume: 27 Issue: 3 Pages: 393-398 DOI: 10.1017/S0263034609000500 Published: SEP 2009

Mocek T., Rus B., Kozlova M., et al.
Plasma-based X-ray laser at 21 nm for multidisciplinary applications
EUROPEAN PHYSICAL JOURNAL D Volume: 54 Issue: 2 Pages: 439-444 DOI: 10.1140/epjd/e2009-00021-1 Published: AUG 2009

Booth N., Edwards M. H., Zhai Z., et al.
Grazing incidence pumping of an 18.9 nm Ni-like Mo X-ray laser
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS Volume: 175 Pages: 153-158 DOI: 10.1140/epjst/e2009-01134-3 Published: AUG 2009

Mahdieh M. H., Fazeli R., Tallents G. J.
Soft x-ray enhancement from a porous nano-layer on metal targets irradiated by long laser pulses
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS Volume: 42 Issue: 12 Pages: - Article Number: 125602 DOI: 10.1088/0953-4075/42/12/125602 Published: JUN 28 2009

Gartside L. M. R., Tallents G. J., Pasley J., et al.
Editor(s): Lewis CLS, Riley D
XUV Probing as a Diagnostic of Rayleigh-Taylor Instability Growth
Conference: 11th International Conference on X-Ray Lasers Location: Queens Univ Belfast, Belfast, NORTH IRELAND Date: AUG 17-22, 2008
Sponsor(s): Andor Technol; Coherent; Off Depot; Inst Phys; Belfast Visitor & Convent Bur
X-RAY LASERS 2008, PROCEEDINGS Book Series: Springer Proceedings in Physics Volume: 130 Pages: 469-474 Published: 2009

Booth N., Edwards M. H., Zhai Z., et al.
Editor(s): Lewis CLS, Riley D
Ablation Measurements Using Ni-Like Ag X-Ray Laser Transmission
Conference: 11th International Conference on X-Ray Lasers Location: Queens Univ Belfast, Belfast, NORTH IRELAND Date: AUG 17-22, 2008
Sponsor(s): Andor Technol; Coherent; Off Depot; Inst Phys; Belfast Visitor & Convent Bur
X-RAY LASERS 2008, PROCEEDINGS Book Series: Springer Proceedings in Physics Volume: 130 Pages: 365-372 Published: 2009

Tallents G. J., Booth N., Edwards M. H., et al.
Editor(s): Lewis CLS, Riley D
X-Ray Lasers as Probes of Plasma Parameters
Conference: 11th International Conference on X-Ray Lasers Location: Queens Univ Belfast, Belfast, NORTH IRELAND Date: AUG 17-22, 2008
Sponsor(s): Andor Technol; Coherent; Off Depot; Inst Phys; Belfast Visitor & Convent Bur
X-RAY LASERS 2008, PROCEEDINGS Book Series: Springer Proceedings in Physics Volume: 130 Pages: 331-340 Published: 2009

Tallents G. J., Al'miev I., Booth N., et al.
Collisionally excited extreme ultra-violet lasers created by laser irradiation of plasmas
Conference: 22nd Annual Meeting of the IEEE-Photonics-Society Location: Belek Antalya, TURKEY Date: OCT 04-08, 2009
Sponsor(s): IEEE Photon Soc
2009 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1AND 2 Book Series: IEEE Lasers and Electro-Optics Society (LEOS) Annual Meeting Pages: 108-109 Published: 2009

2008

Scannell R., Walsh M. J., Carolan P. G., et al.
Design of a new Nd:YAG Thomson scattering system for MAST
Conference: 17th Topical Conference on High-Temperature Plasma Diagnostics Location: Albuquerque, NM Date: 2008
REVIEW OF SCIENTIFIC INSTRUMENTS Volume: 79 Issue: 10 Pages: - Article Number: 10E730 DOI: 10.1063/1.2971971 Published: OCT 2008

Huang H., Tallents G. J.
Maximum material thickness for extreme ultra-violet and X-ray backlighter probing of dense plasma
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Volume: 109 Issue: 12-13 Pages: 2272-2280 DOI: 10.1016/j.jqsrt.2008.02.011 Published: AUG-SEP 2008

2007

B RUS, T MOCEK, M KOZLOVA, J POLAN, P HOMER, M STUPKA, GJ TALLENTS, MH EDWARDS, P MISTRY, DS WHITTAKER, N BOOTH, Z ZHAI, GJ PERT, J DUNN, AJ NELSON, ME FOORD, R SHEPHERD, W ROZMUS, HA BALDIS, M FAJARDO, DE D LAZZARI, P ZEITOUN, G JAMELOT, A KLISNICK, D ROS, K CASSOU, S KAZAMIAS, H BERCEGOL, C DANSON, S HAWKES, L JUHA, V HAJKOVA, J CHALUPSKY, J FELDHAUS, H WABNITZ, J NEJDL, J KUBA, M DAVIDKOVA, A PLAVCOVA, V SSTISOVA
Development and applications of multimillijoule soft X-ray lasers
Journal Of Modern Optics 54 2571-2583 (2007)

MH EDWARDS, DS WHITTAKER, GJ TALLENTS, P MISTRY, GJ PERT, B RUS, T MOCEK, M KOZLOVA, J POLAN, A PRAEG, M STUPKA, P HOMER
Laser-ablation rates measured using X-ray laser transmission
Physical Review Letters 99 195002 (2007)

P MISTRY, GJ TALLENTS AND MH EDWARDS
X-ray laser pulses at the Fourier transform limit
Phys. Rev. A 75 013818 (2007) (8 pages)

E KACAR , A DEMIR AND GJ TALLENTS
Modelling of the Ni-like and Co-like line emission from Ni-like Silver X-ray laser media
J. Plasma Phys. 72 1263-1267 (2006) (5 pages)

H HUANG AND GJ TALLENTS
The output of amplified spontaneous emission lasers
J. Quant. Spectrosc. Radiat. Transf. 102 425-431 (2006) (7 pages)

MH EDWARDS, D WHITTAKER, P MISTRY, N BOOTH, GJ PERT, GJ TALLENTS, B RUS, T MOCEK, M KOSLOVA, C MCKENNA, A DELSERIEYS, CLS LEWIS, M NOTLEY AND D NEELY
Opacity measurements of a hot iron plasma using an x-ray laser
Phys. Rev. Lett. 97 035001 (2006) (4 pages)

N KENAR , A DEMIR AND GJ TALLENTS
Modeling of X-ray resonance lines emitted from laser produced copper plasma
J. Phys. IV 133 1177-1179 (2006) (3 pages)

A KLISNICK, O GUILBAUD, D ROS, K CASSOU, S KAZAMIAS, G JAMELOT, JC LAGRON, D JOYEUX, D PHALIPPOU, Y LECHANTRE, M EDWARDS, P MISTRY AND GJ TALLENTS
Experimental study of the temporal coherence and spectral profile of the 13.9 nm transient X-ray laser
J. Quant. Spectrosc. Radiat. Transf. 99 370-380 (2006) (11 pages)

D RILEY, FY KHATTAK, DU OAMBP SERT, RJ CLARKE, EJ DIVALL, M EDWARDS, PS FOSTER, CJ HOOKER, A LANGLEY, P MISTRY, D NEELY, J SMITH, C SPINDLOE, GJ TALLENTS AND M TOLLEY
Efficient K-alpha and He-alpha emission from Ti foils irradiated with 400 nm, 45 fs laser pulses
J. Quant. Spectrosc. Radiat. Transf. 99 537-547 (2006) (11 pages)

FY KHATTAK, RJ CLARKE, EJ DIVALL, M EDWARDS, PS FOSTER, CJ HOOKER, AJ LANGLEY, P MISTRY, D NEELY, DU OAMBP SERT, J SMITH, C SPINDLOE, G TALLENTS, M TOLLEY AND D RILEY
Enhanced He-alpha emission from "smoked" Ti targets irradiated with 400nm, 45 fs laser pulses
Europhys. Lett. 72 242-248 (2005) (7 pages)

G. J. TALLENTS, M. H. EDWARDS, P. MISTRY, G. J. PERT, and others (7).
Experiments and Simulations of short-pulse laser-pumped extreme ultraviolet lasers.
IEEE J. Selected Topics Quantum Electronics 10, 1373-1381 (2004).

Y. ABOU-ALI, Q. L. DONG, A. DEMIR, R. E. KING, G. J. PERT, AND G. J. TALLENTS.
Quantitative simulations of short pulse x-ray laser experiments.
J. Phys. B-Atomic Molecular Optical Physics 37, 2855-2868, 2004).

A. DEMIR, N. KENAR, AND G. J. TALLENTS.
Comparison of simulated X-ray conversion efficiency of laser produced iron plasma with experimental results.
Applied Phys. B-Lasers Optics 78, 945-948 (2004).

Y. ABOU-ALI, A. DEMIR, G. J. TALLENTS, M. EDWARDS, R. E. KING, AND G. J. PERT.
Comparison of simulated and experimental time resolved emission for a Ne-like nickel x-ray laser.
J. Phys. B-Atomic Molecular Optical Physics 36, 4097-4106, 2003).

G. J. TALLENTS.
The physics of soft x-ray lasers pumped by electron collisions in laser plasmas.
J. Phys. D-Applied Physics 36, R259-R276 (2003).

Y. ABOU-ALI, G. J. TALLENTS, M. EDWARDS, G. J. PERT, and others (17).
Measurement of the duration of X-ray lasing pumped by an optical laser pulse of picosecond duration.
Optics Comm. 215, 397-406 (2003).

G. J. TALLENTS, M. EDWARDS, G. J. PERT, and others (16).
A review of X-ray laser development at Rutherford Appleton Laboratory.
Laser Particle Beams 20, 201-209 (2002).

S. J. PESTEHE, G. J. TALLENTS, and others (7).
Efficiency of 1.5-4.5 keV x-ray production from 2 ps duration KrF laser pulses incident onto solid targets.
J. Phys. D-Applied Physics 35, 1117-1122 (2002).

A. KLISNICK, G. J. TALLENTS, and others (18).
Demonstration of a 2-ps transient x-ray laser.
Phys. Rev. A 65, 033810 (2002). [ external link ]

S. J. PESTEHE AND G. J. TALLENTS.
Escape factors for laser-plasmas.
J. Quantitative Spectroscopy & Radiative Transfer 72, 853-878, 2002).

R. E. KING, G. J. PERT, G. J. TALLENTS, and others (13).
Saturated x-ray lasers at 196 and 73 angstrom pumped by a picosecond traveling-wave excitation.
Phys. Rev. A 6405, 053810 (2001). [ external link ]

A. KLISNICK, G. J. TALLENTS, and others (21).
Generation of a transient short pulse X-ray laser using a traveling-wave sub-ps pump pulse.
J. De Physique Iv 11, 11-17 (2001).

J. KUBA, G. J. TALLENTS, and others (18).
Temporal resolution of a transient pumping X-ray laser.
J. De Physique Iv 11, 43-46 (2001).

R. KEENAN, G. J. TALLENTS, G. J. PERT, and others (16).
Developments in X-ray laser pumping with travelling wave at Vulcan.
J. De Physique Iv 11, 47-50 (2001).

G. J. TALLENTS, G. J. PERT, and others (9).
Short pulse pumped X-ray lasers.
J. De Physique Iv 11, 59-66 (2001).

F. STRATI AND G. J. TALLENTS.
Group speed effects in saturated soft X-ray lasers in transient collisional excitation regime driven with travelling wave pumping.
J. De Physique Iv 11, 297-300 (2001).

S. J. PESTEHE AND G. J. TALLENTS.
A model for opacity measurements across expanding X-ray laser media.
J. De Physique Iv 11, 333-336 (2001).

S. J. TOPPING, G. J. TALLENTS, and others (9).
Progress in FWSD non-linear effects with XRLs.
J. De Physique Iv 11, 487-490 (2001).

F. STRATI AND G. J. TALLENTS.
Analytical modeling of group-velocity effects in saturated soft-x-ray lasers pumped with a picosecond traveling-wave excitation.
Phys. Rev. A 64, 013807 (2001). [ external link ]

C. L. S. LEWIS AND G. J. TALLENTS.
A review of Ni-like X-ray laser experiments undertaken using the VULCAN laser at the Rutherford Appleton Laboratory.
Comptes Rendus De L Academie Des Sciences Serie Iv Physique Astrophysique 1, 1053-1063 (2000).