JFIF$Photoshop 3.08BIMDMIT Researchers Develop Self-Organizing “Pencil Beam” Laser to A720260427PSCIENMAGUAuthorhMIT Researchers Develop Self-Organizing “Pencil Beam” Laser to Advance Brain-Targeted Therapy Design Science@https://scienmag.com/mit-researchers-develop-self-organizing-pen© 2026 Sciencehttps://scienmag.com/In a groundbreaking leap for optical physics and bioimaging technology, researchers at the Massachusetts Institute of Technology (MIT) have unveiled a perplexing yet transformative phenomenon: under meticulously controlled conditions, a chaotic laser beam can spontaneously self-organize into an exquisitely focused pencil-like beam. This counterintuitive discovery shatters traditional paradigms about laser behavior in multimode optical fibers […]ScienceChe Chemistry Chemistryadvanced brain therapy designblood-brain barrier imagingbrain-targeted laser therapychaotic laser beam control%fiber disorder nonlinear interactionsmedical imaging innovations MIT laser beam self-organization&multimode optical fiber laser behavior#nonlinear optical effects in fibersoptical physics breakthroughspencil beam laser technology$ultrafast high-resolution bioimagingC    !'"#%%%),($+!$%$C   $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$"E!1A"Qaq2B#R3r$Sb4C5Ds4!1AQa"q2#R3r ?h`𥃝e9ӮÕ*xDGXp?F7;KZ`pK/(rirR Fx *@be{?:nVh'o_Z1N98`ѩEiYYp$繇 QB?,p~f'{Gk܏~ڭy@ˑVҺ6Ph}Jf<ѦT#Q:_gU]Qn~J?:=cF|\Ю$'n;Vr `|^CY*K"6$Lc{v5;Ig 8 wf4R4==3UVS!IݞЌ%Bf`;ֶYF|:wu9vܣr0Ewat-D㇪S{]$kkS 2YI7!]ҨucLo•L^I >)ʷ( VOh BB}%=:nf=&;J2JY'UOȎ R1IQIx@w~0n4f7@]>:$"& ~?,P}L/Yt&aUe|*Wљ,{^`Mۼ%RUc]d= /CN0{;>]nBmoF1ž ہف7<[f:՛~3#(ß n8uH 0 ,wc|3[(dE8 #hmX##iDypodywxQ-5cø<]P N 돪Ȏ-uxWo?Cr4M3{JzYmjJmcn->2DAO.>Uk}%h#dهJ*vݰ^M(AῗO|-;abNvSZ=udW?RN EZSOMnKnݻwuF)Szwhy䰬MmpZmN(LepRZ"ҭoP.>,q#R\j]e!jƧ+qYRI.70bie1vN~CDK#g<] mH4.3nQO+d+;~gp|ƭ^v-j['я*ZS^EotRDρ*hR8OoYtf_]Iku2rXkSoB`p;&km+H6eNȊa!Mj 882`f<|9ז2{x/oj>g8 RnZHiKlwI90#v7&zvfZC[6y=5B9<ּKyW6s3FF 9t5Ϛ8ev-J9^XNUV7(֪9'x)5>KMjRxvOU6[T/ ȡQR;41xGOʦ*}iKJkԯa3kSB]sXI\ZMt~8!_#FgSh߃C魌sc !K68 n_ ..YLx[ ]i6vn"9ߝ ֓]p}'mɖ}5;Z"̮!ydVF$IdKdb$ #g#(k}A$qKtlR[y'5"p]TWnSQڔFv$;~4{Ƹkg b8NꜷڢN,4M¹[=]U%s$OrWjEVSGiۋ%8S6*P!g8ǂϷ[ 8; ÁRp6$Iou J{=m%z;C/UKSi#6۲Y.ud}gSq$c s OO1iqa5Оj2\Gg=Ii R1TRp{Džf>qc8Rd*BstqMWz*qgw4XڔK3p*S1w:| PΉBvWnåwq+7nMԯOU bҧzmd`,hV0; od?,+c~zcV-DYCJ7קhmGhz[y[2W%hi[Rfܱ<02+ F"f:J\̚\O^KܓsϢx&Wg߻|jĿjZq$t08;x|j6S{#Dr `YRţW{mFnL%nt@'8?K~]]ãi5&JĀ#5^t'Hs$^k2 <r2;>ʶXEsA,i nCE}"յ 00"l H]/G-jV۰M]TӢ>-*wq.VLo!AOiXtϤŮ-UbGVC'`v@ J{ G2ciay;U떶u2gj" xO>@,#/Yr={jLulvy03\eq{J-{_3BhnzB ?OڍZE`c 8ƽ$#C>u_is%.cN[ wg"*iO:18,MڭV5 ؒFQTo;kWWq2X$0^Chn8jz{?[-SK!,DWT'|kl͛qZ1v՝JOI1 FvYm>m$ 9hw*ZMd@$׈:ҭq|? |C3-*kW~6c{6|GfR^U2UU*,aq?(P{!B fuI ;擇s$IKP [۝ATL]%couYy$p~CSD!'6=XxԺ ymyox}@Hn0 |cY#RlBOJyDPdd`1{E3SɧukslDa{@2dApEyK4N>paݣ–8QXj:қۭ*]YRoDsדnkCbAx!rK ^N!uu01AFx$ʼP#Hl'f=BxyqI9žf=ߏ?JRn߈3g皷m.n!tFC1?/m5OYӔ=՚3L3Me,|^ٲw*;ÔH9aKۘ~SD#_A kɿCV= ;jx8%uBN?^t8\=NܲTt<"DbAϾdVMߎ>u9bGQ"ݓOqгIˁ 2D=*T{JS%N8mɹ~u2۱wZbsr,y ђq[@Q="ByA;d &; w&7ef*xuV>Bf#}Pv;H]Cg†ݒGL~bJ&S=E=z+g}"~bOYmY@a*RI\K>E0Tx#4MC=. oGT찓;Xn-\dv H