Direct generation of mid-infrared pulsed optical vortices at ∼ 2.7 µm
We present the first, to the best of our knowledge, direct generation of pulsed optical vortices in the 2.7-µ m spectral range by employing polycrystalline Fe:ZnSe as a saturable absorber (SA). A modified theoretical model taking into account the propagation features of the reshaped annular pump bea...
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| Veröffentlicht in: | Optics express 2021-12, Vol.29 (25), p.41842 |
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| creator | Gao, Qinggang Zhou, Jingjing Jia, Daiwen Wang, Yinyin Chen, Bin Liu, Peng Huang, Zixuan Tian, Kangzhen Liu, Shande Zhang, Yuping Zhang, Huiyun Wang, Zhanxin Zhao, Yongguang |
| description | We present the first, to the best of our knowledge, direct generation of pulsed optical vortices in the 2.7-µ m spectral range by employing polycrystalline Fe:ZnSe as a saturable absorber (SA). A modified theoretical model taking into account the propagation features of the reshaped annular pump beam is elaborated to accurately determine the excitation conditions of the Laguerre–Gaussian (LG
0,
l
) modes, yielding a lasing efficiency comparable to the fundamental TEM
00
mode in continuous-wave (CW) regime. Nanosecond scalar optical vortices with well-defined handedness are successfully produced by taking advantages of designated mode-matching, high polarization extinction ratio (PER), and the "spatial filter" effect of the SA on other transverse modes. Such scalar vortex laser pulses in the mid-infrared region will enable new applications such as frequency down conversion to produce optical vortices at longer (far-infrared) wavelengths, structuring organic materials, novel molecular spectroscopy, etc. |
| doi_str_mv | 10.1364/OE.444033 |
| format | Article |
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0,
l
) modes, yielding a lasing efficiency comparable to the fundamental TEM
00
mode in continuous-wave (CW) regime. Nanosecond scalar optical vortices with well-defined handedness are successfully produced by taking advantages of designated mode-matching, high polarization extinction ratio (PER), and the "spatial filter" effect of the SA on other transverse modes. Such scalar vortex laser pulses in the mid-infrared region will enable new applications such as frequency down conversion to produce optical vortices at longer (far-infrared) wavelengths, structuring organic materials, novel molecular spectroscopy, etc.</description><identifier>ISSN: 1094-4087</identifier><identifier>EISSN: 1094-4087</identifier><identifier>DOI: 10.1364/OE.444033</identifier><language>eng</language><ispartof>Optics express, 2021-12, Vol.29 (25), p.41842</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c743-4c813557030c462f0049490089881d9441a913c010e0796da793a6b8f057c3903</citedby><cites>FETCH-LOGICAL-c743-4c813557030c462f0049490089881d9441a913c010e0796da793a6b8f057c3903</cites><orcidid>0000-0001-7236-6114 ; 0000-0002-3937-3950</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,27901,27902</link.rule.ids></links><search><creatorcontrib>Gao, Qinggang</creatorcontrib><creatorcontrib>Zhou, Jingjing</creatorcontrib><creatorcontrib>Jia, Daiwen</creatorcontrib><creatorcontrib>Wang, Yinyin</creatorcontrib><creatorcontrib>Chen, Bin</creatorcontrib><creatorcontrib>Liu, Peng</creatorcontrib><creatorcontrib>Huang, Zixuan</creatorcontrib><creatorcontrib>Tian, Kangzhen</creatorcontrib><creatorcontrib>Liu, Shande</creatorcontrib><creatorcontrib>Zhang, Yuping</creatorcontrib><creatorcontrib>Zhang, Huiyun</creatorcontrib><creatorcontrib>Wang, Zhanxin</creatorcontrib><creatorcontrib>Zhao, Yongguang</creatorcontrib><title>Direct generation of mid-infrared pulsed optical vortices at ∼ 2.7 µm</title><title>Optics express</title><description>We present the first, to the best of our knowledge, direct generation of pulsed optical vortices in the 2.7-µ m spectral range by employing polycrystalline Fe:ZnSe as a saturable absorber (SA). A modified theoretical model taking into account the propagation features of the reshaped annular pump beam is elaborated to accurately determine the excitation conditions of the Laguerre–Gaussian (LG
0,
l
) modes, yielding a lasing efficiency comparable to the fundamental TEM
00
mode in continuous-wave (CW) regime. Nanosecond scalar optical vortices with well-defined handedness are successfully produced by taking advantages of designated mode-matching, high polarization extinction ratio (PER), and the "spatial filter" effect of the SA on other transverse modes. Such scalar vortex laser pulses in the mid-infrared region will enable new applications such as frequency down conversion to produce optical vortices at longer (far-infrared) wavelengths, structuring organic materials, novel molecular spectroscopy, etc.</description><issn>1094-4087</issn><issn>1094-4087</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpNkL1OwzAURi0EEqUw8AZeGRKue29ie0QlUKRKWbpHxrGRUfMjOyDxBrwQGxOPwpMQVAamc4ZP33AYuxSQCyzpuq5yIgLEI7YQoCkjUPL4n5-ys5SeAQRJLRdscxuisxN_cr2LZgpDzwfPu9BmoffRRNfy8WWfZgzjFKzZ89chzuISNxP_fv_kq1zyr4_unJ14Mw8v_rhku7tqt95k2_r-YX2zzawkzMgqgUUhAcFSufIApEkDKK2UaDWRMFqgBQEOpC5bIzWa8lF5KKRFDbhkV4dbG4eUovPNGENn4lsjoPkt0NRVcyiAP3VkTHc</recordid><startdate>20211206</startdate><enddate>20211206</enddate><creator>Gao, Qinggang</creator><creator>Zhou, Jingjing</creator><creator>Jia, Daiwen</creator><creator>Wang, Yinyin</creator><creator>Chen, Bin</creator><creator>Liu, Peng</creator><creator>Huang, Zixuan</creator><creator>Tian, Kangzhen</creator><creator>Liu, Shande</creator><creator>Zhang, Yuping</creator><creator>Zhang, Huiyun</creator><creator>Wang, Zhanxin</creator><creator>Zhao, Yongguang</creator><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-7236-6114</orcidid><orcidid>https://orcid.org/0000-0002-3937-3950</orcidid></search><sort><creationdate>20211206</creationdate><title>Direct generation of mid-infrared pulsed optical vortices at ∼ 2.7 µm</title><author>Gao, Qinggang ; Zhou, Jingjing ; Jia, Daiwen ; Wang, Yinyin ; Chen, Bin ; Liu, Peng ; Huang, Zixuan ; Tian, Kangzhen ; Liu, Shande ; Zhang, Yuping ; Zhang, Huiyun ; Wang, Zhanxin ; Zhao, Yongguang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c743-4c813557030c462f0049490089881d9441a913c010e0796da793a6b8f057c3903</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gao, Qinggang</creatorcontrib><creatorcontrib>Zhou, Jingjing</creatorcontrib><creatorcontrib>Jia, Daiwen</creatorcontrib><creatorcontrib>Wang, Yinyin</creatorcontrib><creatorcontrib>Chen, Bin</creatorcontrib><creatorcontrib>Liu, Peng</creatorcontrib><creatorcontrib>Huang, Zixuan</creatorcontrib><creatorcontrib>Tian, Kangzhen</creatorcontrib><creatorcontrib>Liu, Shande</creatorcontrib><creatorcontrib>Zhang, Yuping</creatorcontrib><creatorcontrib>Zhang, Huiyun</creatorcontrib><creatorcontrib>Wang, Zhanxin</creatorcontrib><creatorcontrib>Zhao, Yongguang</creatorcontrib><collection>CrossRef</collection><jtitle>Optics express</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gao, Qinggang</au><au>Zhou, Jingjing</au><au>Jia, Daiwen</au><au>Wang, Yinyin</au><au>Chen, Bin</au><au>Liu, Peng</au><au>Huang, Zixuan</au><au>Tian, Kangzhen</au><au>Liu, Shande</au><au>Zhang, Yuping</au><au>Zhang, Huiyun</au><au>Wang, Zhanxin</au><au>Zhao, Yongguang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Direct generation of mid-infrared pulsed optical vortices at ∼ 2.7 µm</atitle><jtitle>Optics express</jtitle><date>2021-12-06</date><risdate>2021</risdate><volume>29</volume><issue>25</issue><spage>41842</spage><pages>41842-</pages><issn>1094-4087</issn><eissn>1094-4087</eissn><abstract>We present the first, to the best of our knowledge, direct generation of pulsed optical vortices in the 2.7-µ m spectral range by employing polycrystalline Fe:ZnSe as a saturable absorber (SA). A modified theoretical model taking into account the propagation features of the reshaped annular pump beam is elaborated to accurately determine the excitation conditions of the Laguerre–Gaussian (LG
0,
l
) modes, yielding a lasing efficiency comparable to the fundamental TEM
00
mode in continuous-wave (CW) regime. Nanosecond scalar optical vortices with well-defined handedness are successfully produced by taking advantages of designated mode-matching, high polarization extinction ratio (PER), and the "spatial filter" effect of the SA on other transverse modes. Such scalar vortex laser pulses in the mid-infrared region will enable new applications such as frequency down conversion to produce optical vortices at longer (far-infrared) wavelengths, structuring organic materials, novel molecular spectroscopy, etc.</abstract><doi>10.1364/OE.444033</doi><orcidid>https://orcid.org/0000-0001-7236-6114</orcidid><orcidid>https://orcid.org/0000-0002-3937-3950</orcidid></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| title | Direct generation of mid-infrared pulsed optical vortices at ∼ 2.7 µm |
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