Femtosecond Laser Direct Writing for Eternal Data Storage Advances and Challenges

被引：0
|
作者：
Wang Lei [1 ]
Zhang Xu [1 ]
Wang Yi [2 ]
Wang Lin [1 ]
Wang Qing [1 ]
Zang Xue [1 ]
Li Ruifan [3 ]
Xu Yishi [1 ]
Li Zhenze [1 ]
Chen Qidai [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China
[2] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China
[3] Jilin Univ, Coll Mat Sci & Engn, Changchun 130012, Jilin, Peoples R China
来源：
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2022年 / 49卷 / 10期
关键词：
photoelectric device processing; femtosecond laser; laser materials processing; laser-matter interactions; optical storage; nanograting; 3-DIMENSIONAL OPTICAL STORAGE; WAVE-GUIDES; FORM BIREFRINGENCE; INDUCED BREAKDOWN; SCATTERING; SURFACE; DAMAGE; SUBPICOSECOND; FABRICATION; DYNAMICS;
D O I：
10.3788/CJL202249.1002504
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Significance Nowadays the using of bigdata isreshapingourlivesviaartificialintelligenceAIandinternetofthingsIoTbypenetratingeducationmedicalcarebusinessentertainmentandsoonIndustrialcompaniesaroundtheworldaresparingnoefforttocollectmuchdatatoobtainmarketconditionscompetitorsandlogisticsinformationforprofitsandhavelongcreatedTB-orevenPB-scaleinformationMeanwhileconsumersareintegratingsocialmediaentertainmentandreal-timepersonalizedservicesonmobiledevicestoconnectwithfriendsandshoponlineAccordingtotheInternationalDataCorporationIDCthereisanexplosivegrowthinglobaldatawhichisestimatedtoreach175zettabytesZBsby2025HoweverthedisparitybetweentheamountofdigitaldataandtheavailablestoragecapacitiesisenlargingMostimportantlydatastorageaccountsfor1%ofglobalelectricityconsumptionandexertenormouspressureonresourcesandenvironmentsHowevernoneofthecurrentmediumiscapabletomeettherequirementsInespecialthecolddatastoragethatisforculturehistoryscientificresearchandtheseimportantbutinfrequentlyuseddataisurgentlycallingforlong-termandhighcapacitymediumThereforewearechallengedwiththearduoustaskofdevelopingnext-generationdatastoragetechnologieswherefemtosecondlaserdirectwritingforeternaldatastorageoffersapracticalsolutionwithlowenergyconsumptionlonglifetimeandhighcapacityWithmultiplexingdegreesoffreedomthistechnology????sachievablelimitcapacitycouldreach360TBdiscFurthermoreacceleratedagingmeasurementsshowthatnanogratinghasunprecedentedlyhighstabilityincludingthermalstabilityupto1000 degrees CandapracticallyunlimitedlifetimeProgressWereviewedtheresearchprogressoffemtosecondlaserdirectwritingforeternaldatastorageAtfirstweintroducetheinteractionbetweenfemtosecondlaserandmaterialsbyreviewingthreetypesofmodificationOnthisbasistheconceptandbasicphysicalmechanismoffemtosecondlaserpermanentopticalstoragewereintroducedThenwereviewedthedevelopmentof3Dopticalstorageand5DopticalstorageaswellasthestructureformationmechanismindetailNextweintroducedthehigh-densitystorageofover100layersandfastdatarecordingataspeedof100kBsviaasinglechannelpotentialMBsviamultichannelAtthefinalbasedonelectronicfieldcontinuityconditionsatthenanoscalewecalculatedthetheoreticalbottleneckandphysicallimitofopticalstoragebyfemtosecondlaserdirectwritingConclusionandProspectFemtosecondlaserdirectwritinginsidehardmaterialsforpermanentopticalstorageprovidesanunexceptionablesolutionforcolddatastoragetomeetthedemandsofbigdataeraHowevertherearestillsomesignificantscientificandtechnicalproblemsthatmustbeaddressedbetweenthelaboratoryandtheindustrialapplicationForinstancevolumesofnanogratingmustbeminimizedandthedotandlayerspacingmustbereducedtoincreasethestoragedensityMoreoverfastwritingwithfewerpulsesandnewdatareadoutalgorithmsforaccurateandfastdatareadoutarerequiredWefirmlybelievethistechnologywillsupporteveryaspectofourlivesandbringhugeeconomicbenefitstosociety in the future
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