Pub Date : 2003-06-22DOI: 10.1109/CLEOE.2003.1313542
T. Laurila, R. Oikari, H. Koivikko, R. Hernberg
In this paper, frequency-doubled diode laser based on a transmission diffraction grating for high-resolution atomic absorption spectroscopy in the UV at 325 nm is developed. The fundamental single-mode beam is frequency-doubled with a lithium iodate crystal. And CW output power of 40 nW was obtained.
{"title":"Frequency-doubled external cavity diode laser for atomic absorption spectroscopy at 325 nm","authors":"T. Laurila, R. Oikari, H. Koivikko, R. Hernberg","doi":"10.1109/CLEOE.2003.1313542","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313542","url":null,"abstract":"In this paper, frequency-doubled diode laser based on a transmission diffraction grating for high-resolution atomic absorption spectroscopy in the UV at 325 nm is developed. The fundamental single-mode beam is frequency-doubled with a lithium iodate crystal. And CW output power of 40 nW was obtained.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"23 1","pages":"479-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81811639","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1313734
L. Frandsen, P. Borel, M. Thorhauge, J. Cheng, M. Kampanis, Martin Kristensen, A. Lavrinenko, Y. Zhuang, H. Chong
In this paper, bends in planar PCWs are investigated by introducing two smoothed 60/spl deg/ bends each having one hole. The PCWs are defined by leaving out single rows of holes. In and out coupling of light to the PCWs is obtained utilising tapered ridge waveguides. Transmission spectra are recorded for both the TE and TM polarisation with an optical spectrum analyser by using two LED sources centred at 1330 nm and 1550 nm. The 3D FDTD simulations successfully explain the observed bend losses both for the TE and TM polarisations.
{"title":"Propagation of TE and TM polarised light through smoothed sixty degree bends in planar photonic crystal waveguides","authors":"L. Frandsen, P. Borel, M. Thorhauge, J. Cheng, M. Kampanis, Martin Kristensen, A. Lavrinenko, Y. Zhuang, H. Chong","doi":"10.1109/CLEOE.2003.1313734","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313734","url":null,"abstract":"In this paper, bends in planar PCWs are investigated by introducing two smoothed 60/spl deg/ bends each having one hole. The PCWs are defined by leaving out single rows of holes. In and out coupling of light to the PCWs is obtained utilising tapered ridge waveguides. Transmission spectra are recorded for both the TE and TM polarisation with an optical spectrum analyser by using two LED sources centred at 1330 nm and 1550 nm. The 3D FDTD simulations successfully explain the observed bend losses both for the TE and TM polarisations.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"11 1","pages":"677-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84313588","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1312304
B. Vincent, R. Kremer, A. Boudrioua, J. Loulergue, P. Moretti
Frequency doubling has been successfully performed in helium implanted planar waveguides in periodically poled lithium niobate by using quasi phase matching to generate blue laser beams.
利用准相位匹配技术，在周期极化铌酸锂中成功地实现了氦注入平面波导的倍频。
{"title":"Frequency doubling in He/sup +/-implanted periodically poled lithium niobate waveguides","authors":"B. Vincent, R. Kremer, A. Boudrioua, J. Loulergue, P. Moretti","doi":"10.1109/CLEOE.2003.1312304","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312304","url":null,"abstract":"Frequency doubling has been successfully performed in helium implanted planar waveguides in periodically poled lithium niobate by using quasi phase matching to generate blue laser beams.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"348 1","pages":"243-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84866126","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1312270
V. Petrov, V. Badikov, G. Shevyrdyaeva, V. Chizhikov
In this paper we report optical parametric amplification in single crystals of AgGaGeS/sub 4/ using pump pulses at 820 nm to produce femtosecond pulses in the mid-IR tunable between 3.8 and 11 /spl mu/m. This new crystal is considered to be used in high-power applications and the greater variety of phase-matching schemes due to its larger birefringence and biaxial nature.
{"title":"Optical parametric amplification in single crystals of AgGaGeS/sub 4/","authors":"V. Petrov, V. Badikov, G. Shevyrdyaeva, V. Chizhikov","doi":"10.1109/CLEOE.2003.1312270","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312270","url":null,"abstract":"In this paper we report optical parametric amplification in single crystals of AgGaGeS/sub 4/ using pump pulses at 820 nm to produce femtosecond pulses in the mid-IR tunable between 3.8 and 11 /spl mu/m. This new crystal is considered to be used in high-power applications and the greater variety of phase-matching schemes due to its larger birefringence and biaxial nature.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"22 1","pages":"209-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84877278","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1312244
K. Hild, T. Sale, M. Hirotani, Y. Mizuno, T. Kato
This paper investigates the contributions of leakage current and self-heating to the temperature sensitivity. The amount of self-heating and leakage current is estimated and plotted for a constant light output with increasing temperature for both CW and pulsed operation, and the radiative current density for 650 nm emitting GaInP based resonant cavity light emitting diodes (RCLEDs) is calculated using a drift diffusion model (DDM).The model simulates the distribution of charge carriers within the structure and their recombination mechanisms. The radiative current in GaInP quantum wells is also extracted and plotted.
{"title":"Leakage current and self-heating in 650 nm resonant-cavity LEDs","authors":"K. Hild, T. Sale, M. Hirotani, Y. Mizuno, T. Kato","doi":"10.1109/CLEOE.2003.1312244","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312244","url":null,"abstract":"This paper investigates the contributions of leakage current and self-heating to the temperature sensitivity. The amount of self-heating and leakage current is estimated and plotted for a constant light output with increasing temperature for both CW and pulsed operation, and the radiative current density for 650 nm emitting GaInP based resonant cavity light emitting diodes (RCLEDs) is calculated using a drift diffusion model (DDM).The model simulates the distribution of charge carriers within the structure and their recombination mechanisms. The radiative current in GaInP quantum wells is also extracted and plotted.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"27 1","pages":"183-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85026443","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1313721
M. Ghulinyan, C. Oton, Z. Gaburro, P. Bettotti, L. D. Negro, Lorenzo Pavesi, R. Sapienza, D. Wiersma
We report the experimental characterization of porous silicon free-standing coupled microcavities and the investigation of light transport properties in such structures, when ultrashort laser pulses are introduced and analyzed.
本文报道了在超短激光脉冲作用下多孔硅独立耦合微腔的实验表征，并研究了这种结构中的光输运特性。
{"title":"Light transport through porous silicon coupled microcavities","authors":"M. Ghulinyan, C. Oton, Z. Gaburro, P. Bettotti, L. D. Negro, Lorenzo Pavesi, R. Sapienza, D. Wiersma","doi":"10.1109/CLEOE.2003.1313721","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313721","url":null,"abstract":"We report the experimental characterization of porous silicon free-standing coupled microcavities and the investigation of light transport properties in such structures, when ultrashort laser pulses are introduced and analyzed.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"8 1","pages":"660-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85055083","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1313531
R. Noll, M. Krauhausen
Multibeam laser triangulation allows measuring different object regions simultaneously with short measuring times and a high dynamic range. This paper describes the methodological approach of multibeam laser triangulation, online measuring systems based on this concept and various industrial applications. For multibeam laser triangulation up to more than 120 laser beams are used to simultaneously measure geometric features of moving products such as e.g. the thickness, profile or surface topology.
{"title":"Multibeam laser triangulation for the measurement of geometric features of moving objects in production lines","authors":"R. Noll, M. Krauhausen","doi":"10.1109/CLEOE.2003.1313531","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313531","url":null,"abstract":"Multibeam laser triangulation allows measuring different object regions simultaneously with short measuring times and a high dynamic range. This paper describes the methodological approach of multibeam laser triangulation, online measuring systems based on this concept and various industrial applications. For multibeam laser triangulation up to more than 120 laser beams are used to simultaneously measure geometric features of moving products such as e.g. the thickness, profile or surface topology.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"206 2 1","pages":"468-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85628348","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1313510
J. Garduno, D. Reid
Second-harmonic frequency resolved optical gating (SHG-FROG) has become a common and reliable technique for the measurement of the amplitude and phase of ultrafast optical pulses of the kind typically produced by mode-locked femtosecond laser. Commonly SHG-FROG measurement is carried out over a period of several seconds to many minutes by using a slowly scanning delay-line coupled to a single-shot spectrometer and other techniques to speed up the acquisition rate.'.' In this work we demonstrate a practical system based on synchronising a fast scanning galvanometer mirror and delay line in such a way that the SHG-FROG trace is viewed directly on a video-monitor and can be acquired and processed using in image acquisition board interfaced to a personal computer. Compared to alternative approaches for rapidly-acquiring a SHGFROG trace, the system provides a more direct output than other mechanically-scanning implementations and is more versatile than a single-shot device because of the ability to control the temporal width of the measured trace. The system is presented in Figure 1 and comprises a dispersion-balanced scanning interferometer that includes silver-coated hollow retro-reflectors and a thin beamsplitter (RI, R2 and BS). One of the retro-reflectors is static and the other is scanned at around 40 Hz using a piezo-electric translalor. The retro-reflectors are adjusted.so the pulses emerge from the interferometer as two parallel but non-collinear beams and these are incident centrally on a concave gold mirror (MZ). The focal path after the gold mirror is folded using a near-normal incidence reflection from a plane gold mirror which steers the beams past the curved mirror and into a Type I phasematched 200pmthick beta-barium borate (BBO) crystal where they combine with a small crossing angle. - aI
{"title":"Real time femtosecond optical pulse measurement using a video-rate frequency-resolved-optical-gating system","authors":"J. Garduno, D. Reid","doi":"10.1109/CLEOE.2003.1313510","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313510","url":null,"abstract":"Second-harmonic frequency resolved optical gating (SHG-FROG) has become a common and reliable technique for the measurement of the amplitude and phase of ultrafast optical pulses of the kind typically produced by mode-locked femtosecond laser. Commonly SHG-FROG measurement is carried out over a period of several seconds to many minutes by using a slowly scanning delay-line coupled to a single-shot spectrometer and other techniques to speed up the acquisition rate.'.' In this work we demonstrate a practical system based on synchronising a fast scanning galvanometer mirror and delay line in such a way that the SHG-FROG trace is viewed directly on a video-monitor and can be acquired and processed using in image acquisition board interfaced to a personal computer. Compared to alternative approaches for rapidly-acquiring a SHGFROG trace, the system provides a more direct output than other mechanically-scanning implementations and is more versatile than a single-shot device because of the ability to control the temporal width of the measured trace. The system is presented in Figure 1 and comprises a dispersion-balanced scanning interferometer that includes silver-coated hollow retro-reflectors and a thin beamsplitter (RI, R2 and BS). One of the retro-reflectors is static and the other is scanned at around 40 Hz using a piezo-electric translalor. The retro-reflectors are adjusted.so the pulses emerge from the interferometer as two parallel but non-collinear beams and these are incident centrally on a concave gold mirror (MZ). The focal path after the gold mirror is folded using a near-normal incidence reflection from a plane gold mirror which steers the beams past the curved mirror and into a Type I phasematched 200pmthick beta-barium borate (BBO) crystal where they combine with a small crossing angle. - aI","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"13 1","pages":"447-447"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85974560","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1312396
J. Lu, K. Ueda, H. Yagi, T. Yanagitani, A. Kaminskii
High power Nd:YAG ceramic laser was developed with high optical conversion efficiency. With maximum laser diode pump power of 290 W, output power of 110 W was obtained with a slope efficiency of 41%. In order to compare with Nd:YAG single crystal laser, the input-output relationship was also measured. Highly transparent neodymium and ytterbium doped Y2O3 ceramics were also developed recently. Laser oscillations were obtained from Nd:Y/sub 2/O/sub 3/ and Yb:Y/sub 2/O/sub 3/ ceramics. These material have favorable properties, such as refractory nature, stability, ruggedness, and optical clarity over a broad spectral region, and especially higher thermal conductivities than YAG.
{"title":"Production and characterization of YAG and Y/sub 2/O/sub 3/ laser ceramics","authors":"J. Lu, K. Ueda, H. Yagi, T. Yanagitani, A. Kaminskii","doi":"10.1109/CLEOE.2003.1312396","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312396","url":null,"abstract":"High power Nd:YAG ceramic laser was developed with high optical conversion efficiency. With maximum laser diode pump power of 290 W, output power of 110 W was obtained with a slope efficiency of 41%. In order to compare with Nd:YAG single crystal laser, the input-output relationship was also measured. Highly transparent neodymium and ytterbium doped Y2O3 ceramics were also developed recently. Laser oscillations were obtained from Nd:Y/sub 2/O/sub 3/ and Yb:Y/sub 2/O/sub 3/ ceramics. These material have favorable properties, such as refractory nature, stability, ruggedness, and optical clarity over a broad spectral region, and especially higher thermal conductivities than YAG.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"236 1","pages":"335-"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76848575","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 : 2003-06-22DOI: 10.1109/CLEOE.2003.1313490
L. Kuipers, H. Gersen, M. Balistreri, J. Korterik, N. V. van Hulst
The propagation of short light pulses through advanced photonic structures like photonic crystals is influenced by the interplay of various physical mechanisms, for instance by the strong material dispersion and the low group velocity. To study the complex interplay between different mechanisms as pulses propagate through a structure, local time-resolved measurements are crucial.
{"title":"Tracking fs light pulses in space and time through advanced photonic structures","authors":"L. Kuipers, H. Gersen, M. Balistreri, J. Korterik, N. V. van Hulst","doi":"10.1109/CLEOE.2003.1313490","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313490","url":null,"abstract":"The propagation of short light pulses through advanced photonic structures like photonic crystals is influenced by the interplay of various physical mechanisms, for instance by the strong material dispersion and the low group velocity. To study the complex interplay between different mechanisms as pulses propagate through a structure, local time-resolved measurements are crucial.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":"105 1 1","pages":"427-427"},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76891847","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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