Publication:
Laser-micromachined zebra-patterned graphene as a mode locker with adjustable loss

dc.contributor.coauthorBae, Ji Eun
dc.contributor.coauthorRotermund, Fabian
dc.contributor.departmentDepartment of Physics
dc.contributor.departmentKUYTAM (Koç University Surface Science and Technology Center)
dc.contributor.kuauthorMorova, Yağız
dc.contributor.kuauthorSennaroğlu, Alphan
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-10T00:00:34Z
dc.date.issued2020
dc.description.abstractIn this Letter, we describe a novel, to the best of our knowledge, device based on micro-structured graphene, referred to as zebra-patterned graphene saturable absorber (ZeGSA), which can be used as a saturable absorber with adjustable loss to initiate femtosecond pulse generation. Femtosecond laser micro-machining was employed to ablate monolayer graphene on an infrasil substrate in the form of stripes with a different duty cycle, resulting in the formation of regions with variable insertion loss in the 0.21%-3.12% range. The mode-locking performance of the device was successfully tested using a Cr4+: forsterite laser, operating near 1250 nm. In comparison with mode locking using non-ablated graphene, the ZeGSA device with regions of decreasing graphene, enabled improved power performance where the mode-locked output power increased from 68 mW to 114 mW, and the corresponding pulse duration decreased from 62 to 48 fs at the same incident pump power of 6.3 W. These experiments indicate that ZeGSA shows great potential as a laser mode locker with adjustable loss and that it should find applications in the development of femtosecond lasers over a broad spectral range.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.indexedbyPubMed
dc.description.issue7
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipNational Research Foundation of Korea [2017R1A4A1015426, 2019R1A2C33003504] National Research Foundation of Korea (2017R1A4A1015426, 2019R1A2C33003504).
dc.description.volume45
dc.identifier.doi10.1364/OL.389290
dc.identifier.eissn1539-4794
dc.identifier.issn0146-9592
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85082790774
dc.identifier.urihttps://doi.org/10.1364/OL.389290
dc.identifier.urihttps://hdl.handle.net/20.500.14288/15826
dc.identifier.wos522794100059
dc.keywordsFemtosecond pulse generation
dc.language.isoeng
dc.publisherOptical Soc Amer
dc.relation.ispartofOptics Letters
dc.subjectOptics
dc.titleLaser-micromachined zebra-patterned graphene as a mode locker with adjustable loss
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorMorova, Yağız
local.contributor.kuauthorSennaroğlu, Alphan
local.publication.orgunit1College of Sciences
local.publication.orgunit1Research Center
local.publication.orgunit2Department of Physics
local.publication.orgunit2KUYTAM (Koç University Surface Science and Technology Center)
relation.isOrgUnitOfPublicationc43d21f0-ae67-4f18-a338-bcaedd4b72a4
relation.isOrgUnitOfPublicationd41f66ba-d7a4-4790-9f8f-a456c391209b
relation.isOrgUnitOfPublication.latestForDiscoveryc43d21f0-ae67-4f18-a338-bcaedd4b72a4
relation.isParentOrgUnitOfPublicationaf0395b0-7219-4165-a909-7016fa30932d
relation.isParentOrgUnitOfPublicationd437580f-9309-4ecb-864a-4af58309d287
relation.isParentOrgUnitOfPublication.latestForDiscoveryaf0395b0-7219-4165-a909-7016fa30932d

Files