Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034470
J. Darmo, T. Muller, G. Strasser, K. Unterrainer, T. Le, A. Stingl
A new scheme for the intracavity generation of terahertz radiation in femtosecond mode-locked Ti:sapphire lasers is presented. The scheme combines advantages of a fast saturable semiconductor Bragg mirror with that of a photoconductive THz emitter. It significantly increases the efficiency of the intracavity THz generation. In addition, the output THz radiation can be electrically modulated at frequencies up to 100 kHz.
{"title":"Voltage-controlled intracavity THz generator for self-starting Ti:sapphire lasers","authors":"J. Darmo, T. Muller, G. Strasser, K. Unterrainer, T. Le, A. Stingl","doi":"10.1109/CLEO.2002.1034470","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034470","url":null,"abstract":"A new scheme for the intracavity generation of terahertz radiation in femtosecond mode-locked Ti:sapphire lasers is presented. The scheme combines advantages of a fast saturable semiconductor Bragg mirror with that of a photoconductive THz emitter. It significantly increases the efficiency of the intracavity THz generation. In addition, the output THz radiation can be electrically modulated at frequencies up to 100 kHz.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114246032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034163
P. Winzer, J. Bromage, R. T. Kane, P. Sammer, C. Headley
We implemented a single-wavelength, pulsed Raman pump with several Watts of output power, widely variable duty cycle and repetition rate, and 12 dB extinction ratio (maximum power/minimum power) using a cascaded Raman fiber lasers at 1465 nm that was modulated by a LiNbO/sub 3/ Mach-Zehnder modulator and passed through a dual stage, high-power cascaded Raman fiber amplifier (CRA).
{"title":"Temporal gain variations in time-division multiplexed Raman pumping schemes","authors":"P. Winzer, J. Bromage, R. T. Kane, P. Sammer, C. Headley","doi":"10.1109/CLEO.2002.1034163","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034163","url":null,"abstract":"We implemented a single-wavelength, pulsed Raman pump with several Watts of output power, widely variable duty cycle and repetition rate, and 12 dB extinction ratio (maximum power/minimum power) using a cascaded Raman fiber lasers at 1465 nm that was modulated by a LiNbO/sub 3/ Mach-Zehnder modulator and passed through a dual stage, high-power cascaded Raman fiber amplifier (CRA).","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133825667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034500
R. Kohler, A. Tredicucci, F. Beltram, H. Beere, E. Linfield, A. Davies, D. Ritchie, R. Iotti, F. Rossi
Injection lasers based on interminiband transitions in GaAs/AlGaAs heterostructures are operated in the THz range. Single-mode emission is achieved at 4.4THz, with output powers of 2.5mW and thresholds of few hundred A/cm/sup 2/ up to 50K.
{"title":"Terahertz semiconductor-heterostructure lasers","authors":"R. Kohler, A. Tredicucci, F. Beltram, H. Beere, E. Linfield, A. Davies, D. Ritchie, R. Iotti, F. Rossi","doi":"10.1109/CLEO.2002.1034500","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034500","url":null,"abstract":"Injection lasers based on interminiband transitions in GaAs/AlGaAs heterostructures are operated in the THz range. Single-mode emission is achieved at 4.4THz, with output powers of 2.5mW and thresholds of few hundred A/cm/sup 2/ up to 50K.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123109248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034493
M. Marhic, K. Wong, L. Kazovsky, T. Tsai
We report the continuous-wave operation of singly-resonant fiber optical parametric oscillators. In a cavity formed by 100 m of highly-nonlinear fiber and two fiber Bragg gratings, pump power threshold was 240 mW; output wavelength could be tuned over 80 nm by tuning the pump. We also obtained an internal conversion efficiency of 30%, compared to the maximum theoretical value of 50%, by using a 1 km-long cavity.
{"title":"Continuous-wave fiber optical parametric oscillator","authors":"M. Marhic, K. Wong, L. Kazovsky, T. Tsai","doi":"10.1109/CLEO.2002.1034493","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034493","url":null,"abstract":"We report the continuous-wave operation of singly-resonant fiber optical parametric oscillators. In a cavity formed by 100 m of highly-nonlinear fiber and two fiber Bragg gratings, pump power threshold was 240 mW; output wavelength could be tuned over 80 nm by tuning the pump. We also obtained an internal conversion efficiency of 30%, compared to the maximum theoretical value of 50%, by using a 1 km-long cavity.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125308045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034491
N. Platonov, D. Gapontsev, Valentin Gapontsev, V. Shumilin
Reliable 135 W CW ytterbium doped fiber laser has been demonstrated with measured M/sup 2/ < 1.05. The stimulated Raman scattering imposed the major limit on the output power. No thermal distortions or damage of the fiber core was observed.
{"title":"135W CW fiber laser with perfect single mode output","authors":"N. Platonov, D. Gapontsev, Valentin Gapontsev, V. Shumilin","doi":"10.1109/CLEO.2002.1034491","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034491","url":null,"abstract":"Reliable 135 W CW ytterbium doped fiber laser has been demonstrated with measured M/sup 2/ < 1.05. The stimulated Raman scattering imposed the major limit on the output power. No thermal distortions or damage of the fiber core was observed.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034482
R. Swint, T. Yeoh, V. Elarde, S. Raychaudhuri, M. Zediker, J. Coleman
We demonstrate an entirely new concept for stabilizing the lateral mode in narrow stripe diode lasers that improves the stable output power level by two to three times over that of conventional lasers.
{"title":"Curved and frustrated index guides for spatial mode control in high power diode lasers","authors":"R. Swint, T. Yeoh, V. Elarde, S. Raychaudhuri, M. Zediker, J. Coleman","doi":"10.1109/CLEO.2002.1034482","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034482","url":null,"abstract":"We demonstrate an entirely new concept for stabilizing the lateral mode in narrow stripe diode lasers that improves the stable output power level by two to three times over that of conventional lasers.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126723759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034497
T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, J. Lu, Z. Xu, J. Wang
We generated the second harmonic of a frequency-tripled Nd:YVO/sub 4/ laser with an quasi-CW, 2.5-mW output and also the shortest-wavelength second harmonic at 172.5 nm and sum-frequency mixing at 163.3 nm by an optical contact, prism-coupled KBe/sub 2/BO/sub 3/F/sub 2/ (KBBF) crystal.
{"title":"Generation of vacuum-ultraviolet light by an optical contact, prism-coupled KBBF crystal","authors":"T. Togashi, T. Kanai, T. Sekikawa, S. Watanabe, C. Chen, J. Lu, Z. Xu, J. Wang","doi":"10.1109/CLEO.2002.1034497","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034497","url":null,"abstract":"We generated the second harmonic of a frequency-tripled Nd:YVO/sub 4/ laser with an quasi-CW, 2.5-mW output and also the shortest-wavelength second harmonic at 172.5 nm and sum-frequency mixing at 163.3 nm by an optical contact, prism-coupled KBe/sub 2/BO/sub 3/F/sub 2/ (KBBF) crystal.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125185855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034465
E. Rafailov, P. Loza-Álvarez, W. Sibbett, G. Sokolovskii, D. Livshits, A. Zhukov, V. Ustinov
We demonstrate strong amplification (>21 dB) of 200 fs pulses in a quantum-dot semiconductor amplifier. Our measurements have shown that such quantum-dot devices can amplify of femtosecond pulses in a spectral range exceeding 100 nm.
{"title":"Strong amplification of femtosecond pulses in quantum dot semiconductor optical amplifier","authors":"E. Rafailov, P. Loza-Álvarez, W. Sibbett, G. Sokolovskii, D. Livshits, A. Zhukov, V. Ustinov","doi":"10.1109/CLEO.2002.1034465","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034465","url":null,"abstract":"We demonstrate strong amplification (>21 dB) of 200 fs pulses in a quantum-dot semiconductor amplifier. Our measurements have shown that such quantum-dot devices can amplify of femtosecond pulses in a spectral range exceeding 100 nm.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121257595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-05-24DOI: 10.1109/CLEO.2002.1034476
M. Shahriar, M. Kleinschmit, J. Donoghue, W. Weathers, R. Tripathi
Using a holographic multiplexer that splits a query image into many copies, we have demonstrated spatial and angular multiplexing simultaneously to search through images in a hologram, realizing a super-parallel optical correlator for ultra-fast database search.
{"title":"Demonstration of a super-parallel holographic correlator for ultrfast database search","authors":"M. Shahriar, M. Kleinschmit, J. Donoghue, W. Weathers, R. Tripathi","doi":"10.1109/CLEO.2002.1034476","DOIUrl":"https://doi.org/10.1109/CLEO.2002.1034476","url":null,"abstract":"Using a holographic multiplexer that splits a query image into many copies, we have demonstrated spatial and angular multiplexing simultaneously to search through images in a hologram, realizing a super-parallel optical correlator for ultra-fast database search.","PeriodicalId":332139,"journal":{"name":"Summaries of Papers Presented at the Lasers and Electro-Optics. CLEO '02. Technical Diges","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129623950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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