SESAM-assisted Kerr-lens mode-locked Cr:ZnS laser
Mode-locking in Cr:ZnS/Se lasers typically rely on Kerr-lensing (KLM) or a semiconductor saturable absorber mirror (SESAM). The former allows generation of shorter pulses, but, unlike the latter, does not support self-starting mode-locking. Here, we combine the advantages of these two techniques and...
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Veröffentlicht in: | Optics letters 2024-09, Vol.49 (18), p.5184 |
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creator | Kowalczyk, Maciej Davydenko, Ivan Sotor, Jarosław |
description | Mode-locking in Cr:ZnS/Se lasers typically rely on Kerr-lensing (KLM) or a semiconductor saturable absorber mirror (SESAM). The former allows generation of shorter pulses, but, unlike the latter, does not support self-starting mode-locking. Here, we combine the advantages of these two techniques and demonstrate the SESAM-assisted KLM Cr:ZnS laser. Our self-starting oscillator generates up to 1 W of average power with 54 fs pulses at a central wavelength of 2360 nm. We identify a general limitation for further pulse shortening in SESAM mode-locked Cr:ZnS/Se lasers, which is related to the finite operation bandwidth of the semiconductor absorbers. In our experiment, we fully exploit the potential of commercially available GaSb SESAMs and fill their entire reflection bands. Furthermore, we compare the performance of a SESAM-assisted KLM laser with a pure KLM oscillator producing broadband, yet not self-starting, 33 fs pulses with 780 mW power. We also show that the choice of saturable absorbers has a negligible impact on the laser intensity noise, which is exceptionally low with sub-0.005% integrated noise. |
doi_str_mv | 10.1364/OL.531548 |
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The former allows generation of shorter pulses, but, unlike the latter, does not support self-starting mode-locking. Here, we combine the advantages of these two techniques and demonstrate the SESAM-assisted KLM Cr:ZnS laser. Our self-starting oscillator generates up to 1 W of average power with 54 fs pulses at a central wavelength of 2360 nm. We identify a general limitation for further pulse shortening in SESAM mode-locked Cr:ZnS/Se lasers, which is related to the finite operation bandwidth of the semiconductor absorbers. In our experiment, we fully exploit the potential of commercially available GaSb SESAMs and fill their entire reflection bands. Furthermore, we compare the performance of a SESAM-assisted KLM laser with a pure KLM oscillator producing broadband, yet not self-starting, 33 fs pulses with 780 mW power. 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The former allows generation of shorter pulses, but, unlike the latter, does not support self-starting mode-locking. Here, we combine the advantages of these two techniques and demonstrate the SESAM-assisted KLM Cr:ZnS laser. Our self-starting oscillator generates up to 1 W of average power with 54 fs pulses at a central wavelength of 2360 nm. We identify a general limitation for further pulse shortening in SESAM mode-locked Cr:ZnS/Se lasers, which is related to the finite operation bandwidth of the semiconductor absorbers. In our experiment, we fully exploit the potential of commercially available GaSb SESAMs and fill their entire reflection bands. Furthermore, we compare the performance of a SESAM-assisted KLM laser with a pure KLM oscillator producing broadband, yet not self-starting, 33 fs pulses with 780 mW power. We also show that the choice of saturable absorbers has a negligible impact on the laser intensity noise, which is exceptionally low with sub-0.005% integrated noise.</description><subject>Absorbers</subject><subject>Broadband</subject><subject>Laser mode locking</subject><subject>Laser modes</subject><subject>Lasers</subject><subject>Noise intensity</subject><subject>Oscillators</subject><issn>0146-9592</issn><issn>1539-4794</issn><issn>1539-4794</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpd0DtLA0EUBeBBFBOjhX9AAjZaTLzz3Bm7EOIDV1JEG5tldvYuJO4jzmQL_70bEi2sLlw-DodDyCWDCRNa3i3SiRJMSXNEhkwJS2Vi5TEZApOaWmX5gJzFuAYAnQhxSgbC8gS41kPClvPl9JW6GFdxi8X4BUOgFTZxXLcF0qr1n_13Fu4_muW4chHDOTkpXRXx4nBH5P1h_jZ7ouni8Xk2TannwmypEsZ6r1EC8wWaQvGkKLl3ALk1CvOEcdACtZRgtdd5aYz3zClMwOdMOjEiN_vcTWi_OozbrF5Fj1XlGmy7mAkGUomEGdvT63903Xah6dvtlOYSjNqp273yoY0xYJltwqp24TtjkO12zBZptt-xt1eHxC6vsfiTv8OJH-mAac8</recordid><startdate>20240915</startdate><enddate>20240915</enddate><creator>Kowalczyk, Maciej</creator><creator>Davydenko, Ivan</creator><creator>Sotor, Jarosław</creator><general>Optical Society of America</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-0891-626X</orcidid><orcidid>https://orcid.org/0000-0001-6220-1797</orcidid></search><sort><creationdate>20240915</creationdate><title>SESAM-assisted Kerr-lens mode-locked Cr:ZnS laser</title><author>Kowalczyk, Maciej ; Davydenko, Ivan ; Sotor, Jarosław</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c238t-5389cc6e401cde8d527df2ca00b985eb712063e644096c6bf88cc1a5e70cb14a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Absorbers</topic><topic>Broadband</topic><topic>Laser mode locking</topic><topic>Laser modes</topic><topic>Lasers</topic><topic>Noise intensity</topic><topic>Oscillators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kowalczyk, Maciej</creatorcontrib><creatorcontrib>Davydenko, Ivan</creatorcontrib><creatorcontrib>Sotor, Jarosław</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Optics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kowalczyk, Maciej</au><au>Davydenko, Ivan</au><au>Sotor, Jarosław</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>SESAM-assisted Kerr-lens mode-locked Cr:ZnS laser</atitle><jtitle>Optics letters</jtitle><addtitle>Opt Lett</addtitle><date>2024-09-15</date><risdate>2024</risdate><volume>49</volume><issue>18</issue><spage>5184</spage><pages>5184-</pages><issn>0146-9592</issn><issn>1539-4794</issn><eissn>1539-4794</eissn><abstract>Mode-locking in Cr:ZnS/Se lasers typically rely on Kerr-lensing (KLM) or a semiconductor saturable absorber mirror (SESAM). The former allows generation of shorter pulses, but, unlike the latter, does not support self-starting mode-locking. Here, we combine the advantages of these two techniques and demonstrate the SESAM-assisted KLM Cr:ZnS laser. Our self-starting oscillator generates up to 1 W of average power with 54 fs pulses at a central wavelength of 2360 nm. We identify a general limitation for further pulse shortening in SESAM mode-locked Cr:ZnS/Se lasers, which is related to the finite operation bandwidth of the semiconductor absorbers. In our experiment, we fully exploit the potential of commercially available GaSb SESAMs and fill their entire reflection bands. Furthermore, we compare the performance of a SESAM-assisted KLM laser with a pure KLM oscillator producing broadband, yet not self-starting, 33 fs pulses with 780 mW power. 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subjects | Absorbers Broadband Laser mode locking Laser modes Lasers Noise intensity Oscillators |
title | SESAM-assisted Kerr-lens mode-locked Cr:ZnS laser |
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