{"title":"Ultrafast Photoconductive Switches With Nano-meter-size Structures","authors":"T. Itatani, T. Nakagawa","doi":"10.1109/CLEOPR.1997.610506","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610506","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129268609","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}
H. Serizawa, M. Fujita, K. Kuboki, M. Aoki, A. Murata, J. Kosaka, H. Harada, H. Nakano
{"title":"Compact 10 Gbit/s Transmitter Module Using A Modulator Integrated Dfb-ld And A Monolithic Driver Ic","authors":"H. Serizawa, M. Fujita, K. Kuboki, M. Aoki, A. Murata, J. Kosaka, H. Harada, H. Nakano","doi":"10.1109/CLEOPR.1997.610591","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610591","url":null,"abstract":"AlGaAs layer also works as a base layer. The holes injected from the emitter flow into the QW through the AlGaAs base layer and recombine with the electrons supplied from the base layer. The A1 content of the base layer is linearly graded from 0.2 (DER side) to 0.15 (QW side) to accelerate the hole transport across the base region. The electric field inside the QW is controlled by the voltage applied between the gate and base electrodes. The emission spectra of these devices at 15 K were taken at various angles of detection 8,,, from the normal to the layer plane for various gate voltages. The emission spectra at 0,,, = 30\", for which the cavity resonance is expected to be 818 nm, for various gate voltages are shown in Fig. 2 with a constant emitter current of I, = 1 mA. We saw that the peak wavelength is red-shifted and the intensity gets smaller for larger negative gate bias, indicating that the electric field in the QW is varied by changing the gate voltage. In the emission spectra, we also found the emission from the AlGaAs base layer around 720 nm. Figure 3 shows the peak intensities of the emission from the QW and that from the AlGaAs base layer for the gate voltage of V( , = OV as functions of 0,,,. Obviously, the emission from the QW is peaked at around 40\". In contrast, the emission from the AIGaAs, for which the wavelength is far from the cavity resonance, is almost isotropic and very weak compared with the largest emission from the QW. Hence, we may conclude that the directivity of the emission from the QW is modified by the microcavity. In conclusion, we have prepared the microcavity light emitting devices equipped with the gate electrode and observed the change of the emission spectra by the gate bias and that the emission directivity is modified by the microcavity.","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130487925","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}
{"title":"Measurement Of X-ray Grazing Reflectance Spectrum Using Laser-produced Plasma","authors":"Y. Goto, T. Kawamura, H. Nakano, N. Uesugi","doi":"10.1109/CLEOPR.1997.613755","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.613755","url":null,"abstract":"qualitative discussion, blueshift reduces phase mismatch between fundamental and harmonic lights. This blueshift is caused by rapid ionization of atmospheric-density gases during interaction with intense femtosecond laser pulses; indicating that higher input intensity produces larger spectral shifting. We have made this theoretical model to comprehend the experimental data, though slight correction of the model will be needed to predict the THG outputs quantitatively and to fully understand the mechanism of THG in the hollow waveguides. \"Faculty of Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama 223, JAPAN","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129130800","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}
H. Suzuki, K. Kondo, C. Jordan, A. Borisov, A. Mcpherson, K. Boyer, C. Rhodes
{"title":"Measurement Of Multiphoton-induced Xe(M) And Xe(L) Emissions From Xe Clusters Excited By Ti:sapphire Laser","authors":"H. Suzuki, K. Kondo, C. Jordan, A. Borisov, A. Mcpherson, K. Boyer, C. Rhodes","doi":"10.1109/CLEOPR.1997.610691","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610691","url":null,"abstract":"' ' ' \" ' ' \" ' \" ' ' ' ' ' \" where, N N-th step from P,, = 0.1 mW to P,, = 3 mW, IjN: Operation current at N-th step, and P,: Optical power at N-th step. The measured results shown in Fig. 2 clearly demonstrate that the kink ratio is decreased by the reduction of bonding force. Secondly, we have observed that both the threshold and the operation current can be reduced considerably by the reduction of bonding force during the assembly. In summary, we have shown that the stress to the active layer should be controlled carefully during the assembly process by careful choice of bonding force to avoid unnecessary degradation of laser diode characteristics, which is particularly so in QW laser diodes. 1. Won-Jin Choi, Chi-Ho Chang, WonTaek Choi, Seung-Hee Kim, JongSeok Kim, Shi-Jong Leem, TaeKyung Yoo, \"Hydrogen Effect on 670 nm AlGaInP Visible Laser during High Temperature Operation,\" IEEE J. Selected Topics in Quantum Electron. 1(2), 717 (1995).","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123898054","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}
{"title":"Application Of Optoelectronic-vlsl Technology To High-speed Switched Data Networks","authors":"A. Krishnamoorthy, J. Ford","doi":"10.1109/CLEOPR.1997.610994","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610994","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124216178","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}
{"title":"Study On Stability Of Intracavity Doubling Frequency Laser Pumped By Diode","authors":"Huijuan He, Y. Liao","doi":"10.1109/CLEOPR.1997.610517","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610517","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123612403","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}
{"title":"First Cw Operation Of AlGaAs/GaAs Laser With GaAs Islands Active Regions Grown On Si Substrate","authors":"A. Ogawa, T. Egawa, T. Jimbo, M. Umeno","doi":"10.1109/CLEOPR.1997.610819","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610819","url":null,"abstract":"Recently the generation of optical pulse trains at millimeter-wave repetition frequencies attracts growing interest for its application to millimeter-wave photonic systems. In particular the frequency band around 60 GHz is considered to be important for various applications such as optical fiber-linked wireless communication, broadcasting, and LAN. The use of a single semiconductor laser device for such signal generation is an extremely attractive issue‘-3 since it will simplify the system configuration. Subharmonic hybrid mode-locking (SH-ML) is one of the most promising methods. In this technique high-repetition passively modelocked semiconductor lasers are stabilized by the subharmonic frequency electrical signals, and therefore the burden on the driving electronics is greatly reduced. Recently we have reported successful SH-ML of a 33 GHz laser and demonstrated its effecti~eness.~ In this paper, we report our experimental trial of SH-ML applied to a higher repetition frequency, i.e., 55 GHz. Figure 1 shows the experimental setup. A 1.56-pm semiconductor laser consisting of a gain section (675 pm) and a saturable absorber (SA) section (75 km) was passively mode-locked at 55.35 GHz by biasing the two sections at 150 mA and -0.9 V, respectively. The driving signal at the cavity resonance frequency or its subharmonic was fed from a signal source through a bias tee to the SA section. The signal source was a synthesizer followed by an amplifier for frequencies less than 40 GHz or an active frequency doubler for 55 GHz. The maximum injected power was 10, 21, and 28 dBm for subharmonic order n = 1 (driving frequency = 55 GHz), 2 (27.5 GHz), and the others (<18.5 GHz), respectively. The optical output was characterized by using an RF spectrum analyzer in combination","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123675083","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}
{"title":"Kink Ratio Reduction In AlGaInP Visible (670 nm) Laser Diode By Reducing External Bonding Stress","authors":"Chi-Ho Chang, Won-tack Choi, Jong-je Jung, K. Yoo","doi":"10.1109/CLEOPR.1997.610688","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610688","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121197115","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}
{"title":"Additive-pulse Mode-locked Fiber Lasers With Self-matched Cavities Formed With Chirped Gratings","authors":"D. Huang, Y. Kiang, C.C. Yang","doi":"10.1109/CLEOPR.1997.610740","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610740","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114093016","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}
{"title":"Ultrashort-pulse Generation From A Diodepumped Self-mode-locked Cr:LiSAF Laser","authors":"S. Uemura, K. Miyazaki","doi":"10.1109/CLEOPR.1997.610741","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610741","url":null,"abstract":"","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114840170","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}