Comparison of higher-order mode suppression and Q-switched laser performance in thulium-doped large mode area and photonic crystal fibers.
Identifieur interne : 000324 ( PubMed/Curation ); précédent : 000323; suivant : 000325Comparison of higher-order mode suppression and Q-switched laser performance in thulium-doped large mode area and photonic crystal fibers.
Auteurs : Pankaj Kadwani [États-Unis] ; Clemence Jollivet ; R Andrew Sims ; Axel Schülzgen ; Lawrence Shah ; Martin RichardsonSource :
- Optics express [ 1094-4087 ] ; 2012.
Abstract
We report the influence of higher order modes (HOMs) in large mode fibers operation in Q-switched oscillator configurations at ~2 μm wavelength. S(2) measurements confirm guiding of LP(11) and LP(02) fiber modes in a large mode area (LMA) step-index fiber, whereas a prototype photonic crystal fiber (PCF) provides nearly single-mode performance with a small portion of light in the LP(11) mode. The difference in HOM content leads to a significant difference in Q-switched oscillator performance. In the step-index fiber, the percentage of cladding light increases by 20% to >40% with increasing pulse energy to ~250 µJ. We accredit this degradation to saturation of the gain in the fundamental mode leading to more light generated in the HOMs, which is eventually converted into cladding light. No such degradation is seen in PCF laser system for >400 µJ energies.
PubMed: 23187192
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S(2) measurements confirm guiding of LP(11) and LP(02) fiber modes in a large mode area (LMA) step-index fiber, whereas a prototype photonic crystal fiber (PCF) provides nearly single-mode performance with a small portion of light in the LP(11) mode. The difference in HOM content leads to a significant difference in Q-switched oscillator performance. In the step-index fiber, the percentage of cladding light increases by 20% to >40% with increasing pulse energy to ~250 µJ. We accredit this degradation to saturation of the gain in the fundamental mode leading to more light generated in the HOMs, which is eventually converted into cladding light. No such degradation is seen in PCF laser system for >400 µJ energies.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">23187192</PMID><DateCreated><Year>2012</Year><Month>11</Month><Day>28</Day></DateCreated><DateCompleted><Year>2013</Year><Month>09</Month><Day>20</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1094-4087</ISSN><JournalIssue CitedMedium="Internet"><Volume>20</Volume><Issue>22</Issue><PubDate><Year>2012</Year><Month>Oct</Month><Day>22</Day></PubDate></JournalIssue><Title>Optics express</Title><ISOAbbreviation>Opt Express</ISOAbbreviation></Journal><ArticleTitle>Comparison of higher-order mode suppression and Q-switched laser performance in thulium-doped large mode area and photonic crystal fibers.</ArticleTitle><Pagination><MedlinePgn>24295-303</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1364/OE.20.024295</ELocationID><Abstract><AbstractText>We report the influence of higher order modes (HOMs) in large mode fibers operation in Q-switched oscillator configurations at ~2 μm wavelength. S(2) measurements confirm guiding of LP(11) and LP(02) fiber modes in a large mode area (LMA) step-index fiber, whereas a prototype photonic crystal fiber (PCF) provides nearly single-mode performance with a small portion of light in the LP(11) mode. The difference in HOM content leads to a significant difference in Q-switched oscillator performance. In the step-index fiber, the percentage of cladding light increases by 20% to >40% with increasing pulse energy to ~250 µJ. We accredit this degradation to saturation of the gain in the fundamental mode leading to more light generated in the HOMs, which is eventually converted into cladding light. No such degradation is seen in PCF laser system for >400 µJ energies.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kadwani</LastName><ForeName>Pankaj</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>CREOL, The College of Optics and Photonics, Building 53, 4000 Central Florida Blvd., Orlando, FL 32816, USA. pkadwani@creol.ucf.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jollivet</LastName><ForeName>Clemence</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Sims</LastName><ForeName>R Andrew</ForeName><Initials>RA</Initials></Author><Author ValidYN="Y"><LastName>Schülzgen</LastName><ForeName>Axel</ForeName><Initials>A</Initials></Author><Author ValidYN="Y"><LastName>Shah</LastName><ForeName>Lawrence</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Richardson</LastName><ForeName>Martin</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Opt Express</MedlineTA><NlmUniqueID>101137103</NlmUniqueID><ISSNLinking>1094-4087</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>11</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>11</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>11</Month><Day>29</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">244085</ArticleId><ArticleId IdType="pubmed">23187192</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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