Corrugated neat thin-film conjugated polymer distributed-feedback lasers
Wave-guided thin-film distributed-feedback (DFB) polymer lasers are fabricated by spin coating a PPV-derived semiconducting polymer, thianthrene-DOO-PPV, onto oxidised silicon wafers with corrugated second-order periodic gratings. The gratings are written by reactive ion beam etching. Laser action i...
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| Veröffentlicht in: | Applied physics. B, Lasers and optics Lasers and optics, 2002-04, Vol.74 (4-5), p.333-342 |
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| container_title | Applied physics. B, Lasers and optics |
| container_volume | 74 |
| creator | HOLZER, W PENZKOFER, A PERTSCH, T DANZ, N BRÄUER, A KLEY, E. B TILLMANN, H BADER, C HÖRHOLD, H.-H |
| description | Wave-guided thin-film distributed-feedback (DFB) polymer lasers are fabricated by spin coating a PPV-derived semiconducting polymer, thianthrene-DOO-PPV, onto oxidised silicon wafers with corrugated second-order periodic gratings. The gratings are written by reactive ion beam etching. Laser action is achieved by transverse pumping with picosecond laser pulses (wavelength 347.15 nm, duration 35 ps). The DFB-laser surface emission and edge emission are analysed. Outside the grating region the polymer film is used for comparative wave-guided travelling wave laser (amplified spontaneous emission (ASE)) studies. The pump pulse threshold energy density for wave-guided DFB-laser action (4--9 *mJcm) is found to be approximately a factor of two lower than the threshold for wave-guided travelling wave laser action. The spectral width of the DFB laser (down to *D*lDFB#~0.07 nm) is considerably narrower than that of the travelling wave laser (*D*lTWL#~14 nm). The DFB-laser emission is highly linearly polarised transverse to the grating axis (TE mode). Only at high pump pulse energy densities does an additional weak TM mode build up. The surface-emitted DFB-laser radiation has a low divergence along the grating direction. For both the DFB lasers and the travelling wave lasers, gain saturation occurs at high excitation energy densities. |
| doi_str_mv | 10.1007/s003400200821 |
| format | Article |
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B ; TILLMANN, H ; BADER, C ; HÖRHOLD, H.-H</creator><creatorcontrib>HOLZER, W ; PENZKOFER, A ; PERTSCH, T ; DANZ, N ; BRÄUER, A ; KLEY, E. B ; TILLMANN, H ; BADER, C ; HÖRHOLD, H.-H</creatorcontrib><description>Wave-guided thin-film distributed-feedback (DFB) polymer lasers are fabricated by spin coating a PPV-derived semiconducting polymer, thianthrene-DOO-PPV, onto oxidised silicon wafers with corrugated second-order periodic gratings. The gratings are written by reactive ion beam etching. Laser action is achieved by transverse pumping with picosecond laser pulses (wavelength 347.15 nm, duration 35 ps). The DFB-laser surface emission and edge emission are analysed. Outside the grating region the polymer film is used for comparative wave-guided travelling wave laser (amplified spontaneous emission (ASE)) studies. The pump pulse threshold energy density for wave-guided DFB-laser action (4--9 *mJcm) is found to be approximately a factor of two lower than the threshold for wave-guided travelling wave laser action. The spectral width of the DFB laser (down to *D*lDFB#~0.07 nm) is considerably narrower than that of the travelling wave laser (*D*lTWL#~14 nm). The DFB-laser emission is highly linearly polarised transverse to the grating axis (TE mode). Only at high pump pulse energy densities does an additional weak TM mode build up. The surface-emitted DFB-laser radiation has a low divergence along the grating direction. For both the DFB lasers and the travelling wave lasers, gain saturation occurs at high excitation energy densities.</description><identifier>ISSN: 0946-2171</identifier><identifier>EISSN: 1432-0649</identifier><identifier>DOI: 10.1007/s003400200821</identifier><language>eng</language><publisher>Berlin: Springer</publisher><subject>Diffraction gratings ; Doped-insulator lasers and other solid state lasers ; Emission analysis ; Energy density ; Exact sciences and technology ; Fundamental areas of phenomenology (including applications) ; Gratings (spectra) ; Lasers ; Optical materials ; Optics ; Physics ; Polymers and organics ; Pumps ; Thresholds ; Traveling waves</subject><ispartof>Applied physics. 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B</creatorcontrib><creatorcontrib>TILLMANN, H</creatorcontrib><creatorcontrib>BADER, C</creatorcontrib><creatorcontrib>HÖRHOLD, H.-H</creatorcontrib><title>Corrugated neat thin-film conjugated polymer distributed-feedback lasers</title><title>Applied physics. B, Lasers and optics</title><description>Wave-guided thin-film distributed-feedback (DFB) polymer lasers are fabricated by spin coating a PPV-derived semiconducting polymer, thianthrene-DOO-PPV, onto oxidised silicon wafers with corrugated second-order periodic gratings. The gratings are written by reactive ion beam etching. Laser action is achieved by transverse pumping with picosecond laser pulses (wavelength 347.15 nm, duration 35 ps). The DFB-laser surface emission and edge emission are analysed. Outside the grating region the polymer film is used for comparative wave-guided travelling wave laser (amplified spontaneous emission (ASE)) studies. The pump pulse threshold energy density for wave-guided DFB-laser action (4--9 *mJcm) is found to be approximately a factor of two lower than the threshold for wave-guided travelling wave laser action. The spectral width of the DFB laser (down to *D*lDFB#~0.07 nm) is considerably narrower than that of the travelling wave laser (*D*lTWL#~14 nm). The DFB-laser emission is highly linearly polarised transverse to the grating axis (TE mode). Only at high pump pulse energy densities does an additional weak TM mode build up. The surface-emitted DFB-laser radiation has a low divergence along the grating direction. For both the DFB lasers and the travelling wave lasers, gain saturation occurs at high excitation energy densities.</description><subject>Diffraction gratings</subject><subject>Doped-insulator lasers and other solid state lasers</subject><subject>Emission analysis</subject><subject>Energy density</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Gratings (spectra)</subject><subject>Lasers</subject><subject>Optical materials</subject><subject>Optics</subject><subject>Physics</subject><subject>Polymers and organics</subject><subject>Pumps</subject><subject>Thresholds</subject><subject>Traveling waves</subject><issn>0946-2171</issn><issn>1432-0649</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNpVkM1LxDAQxYMouK4evfcieInOJGmaPcqirrDgRc8lTSbatR9r0h72v7eyBXF4MDDze-_wGLtGuEOA4j4BSAUgAIzAE7ZAJQUHrVanbAErpbnAAs_ZRUo7mEYbs2CbdR_j-GEH8llHdsiGz7rjoW7azPXdbv7s--bQUsx8nYZYV-N044HIV9Z9ZY1NFNMlOwu2SXQ17yV7f3p8W2_49vX5Zf2w5U5qNXCNxkiVCw3BOOcIAxbgjdY-V1CJoAi8RJJeVBoMOCMs5sojoSE1SS7Z7TF3H_vvkdJQtnVy1DS2o35MJQojtZEyLyaUH1EX-5QihXIf69bGQ4lQ_jZW_mts4m_maJucbUK0navTn0nmWigs5A_qdmo1</recordid><startdate>20020401</startdate><enddate>20020401</enddate><creator>HOLZER, W</creator><creator>PENZKOFER, A</creator><creator>PERTSCH, T</creator><creator>DANZ, N</creator><creator>BRÄUER, A</creator><creator>KLEY, E. 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B</creatorcontrib><creatorcontrib>TILLMANN, H</creatorcontrib><creatorcontrib>BADER, C</creatorcontrib><creatorcontrib>HÖRHOLD, H.-H</creatorcontrib><collection>Pascal-Francis</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><jtitle>Applied physics. B, Lasers and optics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HOLZER, W</au><au>PENZKOFER, A</au><au>PERTSCH, T</au><au>DANZ, N</au><au>BRÄUER, A</au><au>KLEY, E. B</au><au>TILLMANN, H</au><au>BADER, C</au><au>HÖRHOLD, H.-H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Corrugated neat thin-film conjugated polymer distributed-feedback lasers</atitle><jtitle>Applied physics. B, Lasers and optics</jtitle><date>2002-04-01</date><risdate>2002</risdate><volume>74</volume><issue>4-5</issue><spage>333</spage><epage>342</epage><pages>333-342</pages><issn>0946-2171</issn><eissn>1432-0649</eissn><abstract>Wave-guided thin-film distributed-feedback (DFB) polymer lasers are fabricated by spin coating a PPV-derived semiconducting polymer, thianthrene-DOO-PPV, onto oxidised silicon wafers with corrugated second-order periodic gratings. The gratings are written by reactive ion beam etching. Laser action is achieved by transverse pumping with picosecond laser pulses (wavelength 347.15 nm, duration 35 ps). The DFB-laser surface emission and edge emission are analysed. Outside the grating region the polymer film is used for comparative wave-guided travelling wave laser (amplified spontaneous emission (ASE)) studies. The pump pulse threshold energy density for wave-guided DFB-laser action (4--9 *mJcm) is found to be approximately a factor of two lower than the threshold for wave-guided travelling wave laser action. The spectral width of the DFB laser (down to *D*lDFB#~0.07 nm) is considerably narrower than that of the travelling wave laser (*D*lTWL#~14 nm). The DFB-laser emission is highly linearly polarised transverse to the grating axis (TE mode). Only at high pump pulse energy densities does an additional weak TM mode build up. The surface-emitted DFB-laser radiation has a low divergence along the grating direction. For both the DFB lasers and the travelling wave lasers, gain saturation occurs at high excitation energy densities.</abstract><cop>Berlin</cop><pub>Springer</pub><doi>10.1007/s003400200821</doi><tpages>10</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Diffraction gratings Doped-insulator lasers and other solid state lasers Emission analysis Energy density Exact sciences and technology Fundamental areas of phenomenology (including applications) Gratings (spectra) Lasers Optical materials Optics Physics Polymers and organics Pumps Thresholds Traveling waves |
| title | Corrugated neat thin-film conjugated polymer distributed-feedback lasers |
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