Single mode terahertz quantum cascade amplifier
A terahertz (THz) optical amplifier based on a 2.9 THz quantum cascade laser (QCL) structure has been demonstrated. By depositing an antireflective coating on the QCL facet, the laser mirror losses are enhanced to fully suppress the lasing action, creating a THz quantum cascade (QC) amplifier. Terah...
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| Veröffentlicht in: | Applied physics letters 2014-10, Vol.105 (14) |
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| container_issue | 14 |
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| container_title | Applied physics letters |
| container_volume | 105 |
| creator | Ren, Y. Wallis, R. Shah, Y. D. Jessop, D. S. Degl'Innocenti, R. Klimont, A. Kamboj, V. Beere, H. E. Ritchie, D. A. |
| description | A terahertz (THz) optical amplifier based on a 2.9 THz quantum cascade laser (QCL) structure has been demonstrated. By depositing an antireflective coating on the QCL facet, the laser mirror losses are enhanced to fully suppress the lasing action, creating a THz quantum cascade (QC) amplifier. Terahertz radiation amplification has been obtained, by coupling a separate multi-mode THz QCL of the same active region design to the QC amplifier. A bare cavity gain is achieved and shows excellent agreement with the lasing spectrum from the original QCL without the antireflective coating. Furthermore, a maximum optical gain of ∼30 dB with single-mode radiation output is demonstrated. |
| doi_str_mv | 10.1063/1.4897438 |
| format | Article |
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Furthermore, a maximum optical gain of ∼30 dB with single-mode radiation output is demonstrated.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4897438</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Amplification ; Amplifier design ; AMPLIFIERS ; ANTIREFLECTION COATINGS ; Applied physics ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; COUPLING ; CRYSTAL DEFECTS ; GAIN ; LASER MIRRORS ; LASERS ; Lasing ; LOSSES ; Quantum cascade lasers ; SPECTRA ; THZ RANGE</subject><ispartof>Applied physics letters, 2014-10, Vol.105 (14)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c386t-174c3f44828aefbac645773cedf05e6b97767bb4376fd89087391b52689a31003</citedby><cites>FETCH-LOGICAL-c386t-174c3f44828aefbac645773cedf05e6b97767bb4376fd89087391b52689a31003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,315,782,786,887,27931,27932</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22350839$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Ren, Y.</creatorcontrib><creatorcontrib>Wallis, R.</creatorcontrib><creatorcontrib>Shah, Y. 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Furthermore, a maximum optical gain of ∼30 dB with single-mode radiation output is demonstrated.</description><subject>Amplification</subject><subject>Amplifier design</subject><subject>AMPLIFIERS</subject><subject>ANTIREFLECTION COATINGS</subject><subject>Applied physics</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>COUPLING</subject><subject>CRYSTAL DEFECTS</subject><subject>GAIN</subject><subject>LASER MIRRORS</subject><subject>LASERS</subject><subject>Lasing</subject><subject>LOSSES</subject><subject>Quantum cascade lasers</subject><subject>SPECTRA</subject><subject>THZ RANGE</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNpFkEtLAzEcxIMoWKsHv8GCJw_bJvnneZTiCwoe1HPIZhO7ZV9Nsgf99K604GkY5scwDEK3BK8IFrAmK6a0ZKDO0IJgKUsgRJ2jBcYYSqE5uURXKe1nyynAAq3fm_6r9UU31L7IPtqdj_mnOEy2z1NXOJucnRPbjW0TGh-v0UWwbfI3J12iz6fHj81LuX17ft08bEsHSuSSSOYgMKaosj5U1gnGpQTn64C5F5WWUsiqYiBFqJXGSoImFadCaQtk3rpEd8feIeXGJNdk73Zu6HvvsqEUOFag_6kxDofJp2z2wxT7eZihhAoOeIZm6v5IuTikFH0wY2w6G78NwebvNUPM6TX4BVQyW88</recordid><startdate>20141006</startdate><enddate>20141006</enddate><creator>Ren, Y.</creator><creator>Wallis, R.</creator><creator>Shah, Y. 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S.</creatorcontrib><creatorcontrib>Degl'Innocenti, R.</creatorcontrib><creatorcontrib>Klimont, A.</creatorcontrib><creatorcontrib>Kamboj, V.</creatorcontrib><creatorcontrib>Beere, H. E.</creatorcontrib><creatorcontrib>Ritchie, D. A.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ren, Y.</au><au>Wallis, R.</au><au>Shah, Y. D.</au><au>Jessop, D. S.</au><au>Degl'Innocenti, R.</au><au>Klimont, A.</au><au>Kamboj, V.</au><au>Beere, H. E.</au><au>Ritchie, D. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Single mode terahertz quantum cascade amplifier</atitle><jtitle>Applied physics letters</jtitle><date>2014-10-06</date><risdate>2014</risdate><volume>105</volume><issue>14</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>A terahertz (THz) optical amplifier based on a 2.9 THz quantum cascade laser (QCL) structure has been demonstrated. By depositing an antireflective coating on the QCL facet, the laser mirror losses are enhanced to fully suppress the lasing action, creating a THz quantum cascade (QC) amplifier. Terahertz radiation amplification has been obtained, by coupling a separate multi-mode THz QCL of the same active region design to the QC amplifier. A bare cavity gain is achieved and shows excellent agreement with the lasing spectrum from the original QCL without the antireflective coating. Furthermore, a maximum optical gain of ∼30 dB with single-mode radiation output is demonstrated.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4897438</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2014-10, Vol.105 (14) |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Amplification Amplifier design AMPLIFIERS ANTIREFLECTION COATINGS Applied physics CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY COUPLING CRYSTAL DEFECTS GAIN LASER MIRRORS LASERS Lasing LOSSES Quantum cascade lasers SPECTRA THZ RANGE |
| title | Single mode terahertz quantum cascade amplifier |
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