50 Years of the Laser in the City of Light

8/6/2019 50 Years of the Laser in the City of Light

1/24

50 Years of the Laser in the City of LightWednesday, June 23, 2010

Ecole Pol techni ue

Palaiseau

Hi h Fi l i n

A Second Wave of LaserToshiki Tajima

Blaise Pascal Chair,

. ourou,

Institut de Lumire Extrme

andLMU,MPQ, Garching

Acknowledgments for collaboration and advice: G. Mourou, F. Krausz, D. Habs. K. Homma, M.

Kando, A. Suzuki, F. Takasaki, M. Teshima, W. Leemans, E. Esarey, S. Karsch, F. Gruener, W.

1

an ner, . euer, . a we , . oses, . s r epov, . u anov, . a aune, . ross, .

Urakawa, H. Gies, T. Heinzl, R. Schuetzhold, G. Dunne, K. Kondo, S. Iso, X. Yan, R. Assmann, C.Barty, M. Nozaki, A. Chao, W. Chou, N. Naumova, J. Chambaret, C. Keitel, P. Chomaz, D.

Normand P. Martin P. Chen M Downer A. Caldwell


2/24

Laser probing nonlinearities in matter

vs

m

eEx

2

x

~

Rutherfords (accelerator) approach vs Laser approach


3/24

E =m c2

NL Optics


4/24

Chirped Pulse Amplification did it!

100fs100fs

D. Strickland and G. Mourou 1985

4


5/24

Nonlinearities in atom, plasma, and vacuum

AtomicPlasma electronnonlinear Vacuum nonlinearity

vs.

Keldysh field forlaseratomic

Schwinger field forvacuum breakdown

Laserwakefield

ionization

Compact high energy colliders

Compact accelerator applications

Nonlinear QED fields

General relativistic effects

e acce era on or quan um grav y acuum pro e s.a. ar energy


6/24

Relativistic nonlinearity under intense laser

Plasma free of binding potential , but its electron responses:

a)a) ClassicalClassical optics :optics : v


7/24

WakefieldNonlinearity-driven, CollectiveCollective phenomenon = all particles in medium participate

Kelvin wake

Wave breaks at vcNo wave breaks and wake peaks at vcNonlinearities of plasma and water waves

(Wave-head hardto overtake trough. density cusp singularity)

(Wave-head overtakes trough)


8/24

Thousand-fold Compactification

Laser Wakefield Acceleration (LWFA): 103-4 fold gradient

--

-

-

---------

--- --------

---

plasma

~ . mm

-

-- -

--

--

----

-

-- -

-----

---

-

-

--

-

-

-----

---

- -

--

--

--

- ++

+

++

+ +++

++

+

+

++

++

+ ++--

-

- ---

--

--

-

- - --

(gas tube)

upercon uc ng nacr - u e

Fermilab

~40cm

Emax

~32MV/mEmax~100,000MV/m


9/24

GeV electrons from a centimeter LWFAa slide iven to me b S. Karsch

310-m-diameterchannel ca illar

P= 40 TW

ensity 4.310 cm .

Leemans et al., Nature Physics, september 2006 laser intensity 1018 W/cm2

(emphasis by S. Karsch)


10/24

Table-top Brilliant Undulator X-ray Radiationfrom LWFA

( F. Gruener, S. Karsch, et al., Nature Phys., 2009)

Observed undulatorradiation spectrum

LWFA


11/24

Livingston Chart and Recent Saturation

(Suzuki,

20

09)

(http://tesla.desy.de/~rasmus/media/Accelerator%20physics/slides/Livingston%20Plot%202.html)


12/24

World Labgoal =

Put SLACon a football field,

Laser acceleration = no material breakdown ( 3/4 orders

hi her radient however:

(50GeV)

3 orders finer accuracy, and2 orders more efficient laserneeded


13/24

Laser driven collider concept

a TeV collider

Leemans and Esarey (Phys. Today, 09)ICFA-ICUIL Joint Task Force on LaserAcceleration(Darmstadt,10)


14/24

15A. Suzuki (KEK)

h igher energy

h igher energy

Le to enesisLe to enesis

PeV Accelerator SUSY breakingSUSY breakingLaser

Technology

Dark matterDark matter

SupersymmetrySupersymmetry

1 TeV=101 TeV=101212 eVeV

Standard model

14

HiggsHiggs

QuarksQuarks

Le tonsLe tons


15/24

Theory of wakefield toward extreme energy

2 2 2 2 22 2 crn

E m c a m c a

(when 1D theory applies)en

106

107

) 1 TeV ,

a0


16/24

-ray signal from primordial GRB

(Abdo,

Energy-dependent

photon speed ?

etal,

20

Gamma Ray Bursts (GRB)limit is ushed u

)

lo

close to Planck mass)erenerg

Lab PeV (from e-)

y

can explore thiswith control

higher


17/24

Feel vacuum texture: PeV energy

Laseracceleration controlled laboratory test to see quantum gravity texture

on hoton ro a ation S ecial Theor of Relativit : c

Coarser,ower energy

texture

Finer,

hi her ener

c < c0

texture

PeV (converted from e- )(1PeV : fs behind)

. e

1km


18/24

What is vacuum?

crystal

An observer (bug) in crystal

looks at vacuum Phonon : excitation ofvacuum

rong e rea s vacuum

acuum roduces e+e- air vacuum

=()=()(true)(nothing)

Photon : distortion ofvacuum

Strong laserfieldCompton lengthQED vacuum breakdown

Laserwavelength(Naumova

Mourou)


19/24

Intense laser probes matter /vacuum nonlinearity

Crystal nonlinearity second harmonic generation (Franken et al)

QED nonlinearityacuum non near y y g - mass

field (dark energy, axion,..) second harmonic


20/24

QED vacuum probe by intense laser

Heisenberg-Euler Langrangian: tiny nonlinearity, never observed

intense laserneeded; sensitive probe, avoid blinding laser

Phase contrast imaging(refractive index diffraction, noise reduction)

with Homma Habs


21/24

Learning from laser parametric scattering:low ener meV - neV fields vacua

Proposed scheme of co-parallel(with Homma, Habs)

Many orders of magnitude gain

sensitivity over long interaction:

Nonlinearity ofvacuum

cf. Brillouin forward scattering beat / opticalparametric excitation = phonon mediating

(Nambu-Goldston boson)

Mass of light fields(dark energy fields, axion-like fields) resonateswith specific crossing angle of co-propagating lasers


22/24

Scope ofScope of High Field ScienceHigh Field Science

telescope

llider

co

(with Homma, Habs)


23/24

Conclusions

Laser: intensity sees no plateau/ceiling since 1990

on near es o ma er y aser: non near op cs a om c or so

nonlinearity) : Rutherford method vs Lasermethod

Nonlinearity of relativistic plasma laserwakefield

Laser wakefield acceleration: experimentally well established; unique

properties getting known/applications spawn out

e e ec rons; e soon; e wor a sugges e ;

TeV lasercollider contemplated; PeV frontier (primordial GRBs in the lab)

Vacuum nonlinearities: Heisenber ED vacuum robed b intense laserb

phase contrast imaging

Vacuum nonlinearities with weakly coupling light energy fields (meV- neV):

- - ,

dark energy fields

High Fields Science: emerging, carves out new frontier, horizon yet to be

23

seen --------a second wave oflaserrevolution------------


24/24

Centaurus A:

cosmic

wakefield

linac?

Merci Beaucoup!

50 Years of the Laser in the City of Light

Documents

Transcript of 50 Years of the Laser in the City of Light