{"title":"Beam control and switching in nonlinear meso-optical structures","authors":"D. Citrin, S. Tomsovic, W. Torruellas","doi":"10.1364/nlgw.1998.nwa.4","DOIUrl":"https://doi.org/10.1364/nlgw.1998.nwa.4","url":null,"abstract":"Optical structures which confine light in mesoscale dimensions are of increasing interest for applications requiring an active control of the optical light properties. Recent advances in the fundamental understanding of such structures has lead to the prediction and demonstration of unusual and intriguing emission patterns in highly chaotic mesoscopic cavities containing Laser emitting dyes.[1,2] Here, we investigate the influence of a controlling nonlinearity of second and third order in the spatio-temporal dynamics of single and multiple cavity arrangements. In the single cavity case the presence of a nonlinear interaction results in the disappearance of the chaotic evolution while in the multiple cavity case a new geometry resulting in a 2D optical switching network is investigated.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129153207","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}
Matthew E. Anderson, M. Beck, M. Raymer, J. Bierlein
{"title":"Parametric Amplification and Squeezing in Quasi-Phase-Matched Waveguides","authors":"Matthew E. Anderson, M. Beck, M. Raymer, J. Bierlein","doi":"10.1364/nlgw.1995.nthc3","DOIUrl":"https://doi.org/10.1364/nlgw.1995.nthc3","url":null,"abstract":"Nonlinear optical waveguides hold promise as parametric amplifiers and as sources of quadrature-squeezed light. The confinement of the pump field drastically increases the efficiency of the nonlinear conversion. In addition, the control of the spatial mode profiles by the waveguide geometry should diminish the effect of gain-induced diffraction, which has been seen to limit the amount of attainable squeezing in bulk parametric crystals.1 Using subpicosecond laser pulses, we have observed parametric gain as well as quadrature squeezing in a quasi-phase matched KTP waveguide.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132890339","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":"Generation and propagation of stable periodic arrays of soliton stripes in a bulk Kerr liquid","authors":"H. Maillotte, R. Grasser","doi":"10.1364/nlgw.1998.nthc.2","DOIUrl":"https://doi.org/10.1364/nlgw.1998.nthc.2","url":null,"abstract":"Stable periodic arrays of Kerr soliton stripes are generated within bulk carbon disulfide and propagate through the medium by controlling modulation instability with Bragg diffraction.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133010808","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":"Self-writing channel waveguides in As2S3 thin films by two-photon absorption","authors":"C. Meneghini, A. Villeneuve","doi":"10.1364/nlgw.1998.nwb.5","DOIUrl":"https://doi.org/10.1364/nlgw.1998.nwb.5","url":null,"abstract":"Due to their structural flexibility, amorphous chalcogenide glasses, for example as2s3, show a variety of photoinduced effects, such as refractive index change and photodarkening. Bragg gratings1 and photoinduced integrated optical devices2 have already been fabricated by near bandgap light exposure (~500 nm).","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130940896","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":"Cascading of second-order processes in a type II phase-matched SHG crystal applied to mode-locking of a CW Nd:YAG laser","authors":"V. Couderc, O. Guy, L. Lefort, A. Barthélémy","doi":"10.1364/nlgw.1998.nfa.4","DOIUrl":"https://doi.org/10.1364/nlgw.1998.nfa.4","url":null,"abstract":"It has been shown recently that a quadratic non-linear crystal may be used for all-optical signal processing. It was demonstrated that amplitude modulation, phase modulation, transistor action, phase conjugaison was feasible thanks to parametric interactions occurring in crystals cut for second harmonic generation (SHG). The main part of these applications was considered under phase mismatched condition1,2,3,4 and relied on the cascading of sum and difference frequency generation (SFG+DFG). With the use of type II crystal a cascading effect still happens in the case of perfect phase-matching provided the two orthogonally polarized inputs at the fundamental frequency carry different intensity5,6,7. This is even one of the most efficient configuration to achieve all-optical processing with the lowest control powers. The interaction between the two waves at the fundamental frequency and the second harmonic wave may be used in specific arrangement to achieve ultrafast switching, pulse compression8, and saturable absorption or transparency9,10. In particular, we have already demonstrated that a type II SHG crystal excited by unbalanced fundamental intensities on its neutral axis gives rise at the output to an electromagnetic field whose state of polarization is intensity dependent (figure 1). In the case of high imbalance between the two fundamental inputs, the weakest fundamental input may completely vanish during propagation because of the SHG process and be further regenerated by difference frequency generation with an opposite phase. The nonlinear evolution of the polarization was previously exploited in a polarization gate geometry to realize a device with self induced transparency9. It was suggested that the same set-up could be used intracavity to achieve mode-locking of a laser. This forms the subject of the present communication since we report the mode locking operation of a diode pumped CW Nd:YAG laser by means of intensity dependent polarization evolution in a KTP crystal.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130490285","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":"Vector CW and solitary wave interactions with mixed Type 1-Type II second-harmonic generation","authors":"A. Boardman, P. Bontemps, D. Parker, K. Xie","doi":"10.1364/nlgw.1998.nthe.6","DOIUrl":"https://doi.org/10.1364/nlgw.1998.nthe.6","url":null,"abstract":"The four vector equations, appropriate to a mixed type I-type II second-harmonic generation in a thin planar waveguide made from a second-order nonlinear material are solved both approximately and exactly. The solutions offer a richer set of possibilities than just Type II and always involve for both the harmonic and the fundamental. A new kind of polarisation control is shown to be possible, through which CW shut down, of one component of the second harmonic is achieved. The extinction angle is shown to depend strongly upon the phase mismatch parameter. In a second application, for solitary waves, an aperture is placed at the output and it is shown that if approximate stationary states are used as an input then varying the angle of incidence of two input beams produces an excellent output control. It is shown that a switch from 80% of the input energy arriving at the output port to less than 3% is possible.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115215163","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":"Sub-Femtosecond Pulses in 2π-Solitons of the Cascade Stimulated Raman Scattering","authors":"A. E. Kaplan","doi":"10.1364/nlgw.1995.nfb5","DOIUrl":"https://doi.org/10.1364/nlgw.1995.nfb5","url":null,"abstract":"The shortest to date optical pulse length of 6 fs [1] was achieved by using pulse compression technique. Further shortening could be attained by using a Fourier synthesizer [2] of separate lasers synchronized by nonlinear phase-locking [3]. Here, we propose a new approach [4] based on multi-frequency cascade Raman stimulated scattering (CSRS) whose components are mode-locked within 2π soliton reminiscent to the self-induced transparency solitons [5], We show that Raman active materials can support solitons consisting of pump laser wave with the frequency ω\u0000 L\u0000 and many cascade-excited Stocks and anti-Stocks component with their frequencies ω\u0000 j\u0000 = ω\u0000 L\u0000 + jω0, j =±1, +2, +3…, mode-locked to each other through a fast \"fullswing\" 2π-nutation of population at the Raman transition with the frequency ω0 ≪ ω\u0000 L\u0000 . Similarly to \"bright-bright\" 2π-solitons in CSRS with two [6] and three [7] components, these solitons have a new, very simple, Lorentzian intensity profile. Due to the engagement of many mode-locked components, however, their total EM field in the time domain consists of the train of ultra-short pulses (separated by the interval 2π/ω0) with their length being of the same order of magnitude or even shorter than the pump cycle, 2π/ω\u0000 L\u0000 . The major feature of the proposed effect is that all the frequency components of the new soliton are so called bright solitons (in contrast to the well known bright+dark soliton combination in SRS [8]) locked to each other and propagating with the same group velocity. The high-order CSRS required to observe the proposed effect, was first observed experimentally in [9] and later in many other experiments, with the total number of components up to ~10-15. The lock-in of all these components into \"all-bright-SRS\" 2π soliton, however, has never been observed in experiment; its feasibility and resulting effects are discussed here.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124974240","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":"Exact soliton solutions of the cubic-quintic complex Ginzburg-Landau equation","authors":"N. Akhmediev, V. V. Afanasjev, J. Soto-Crespo","doi":"10.1364/nlgw.1995.pd7","DOIUrl":"https://doi.org/10.1364/nlgw.1995.pd7","url":null,"abstract":"Soliton solutions of the 1-D complex Ginzburg-Landau equations (CGLE) are analyzed. We apply the same approah to look for stationary solutions of both the cubic and quintic CGLE, and fing general solutions in both cases. We reveal the singularities of the general solutions and find some families of special solutions which exist at those values of the coefficients where the general solutions cannot be applied. The stability of the special solutions is investigated numerically.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122638683","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":"Modulation instability in a nonlinear dispersive fiber cavity including stimulated Raman scattering","authors":"J. Garcia-Mateos, F. Canal, M. Haelterman","doi":"10.1364/nlgw.1996.sad.17","DOIUrl":"https://doi.org/10.1364/nlgw.1996.sad.17","url":null,"abstract":"Modulational instability (MI) involves the growth of initially weak sidebands at the expense of a continuous wave. The existence of MI in the anomalous group-velocity dispersion regime of an optical fiber is well known [1]. Modulation instability in a synchronously pumped fiber loop was recently predicted even in the normal dispersion regime [2] and has been proposed as the mechanism to generate pulses in the modulational instability laser [2,3]. On the other hand, modulation instability in cavityless propagation has been used as seed for later Raman ultrashort pulse generation [4]. In the present work, we analyze the role played by stimulated Raman scattering in the modulational instability dynamics of a synchronously driven fiber cavity. Starting from this study, we propose applications of our device as a low threshold Raman amplifier and as a modulation instability Raman laser.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131758317","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":"Chemical Patterning Technique for Periodic Poling of KTP Waveguides","authors":"W. Risk, S. Lau","doi":"10.1364/nlgw.1996.fc.6","DOIUrl":"https://doi.org/10.1364/nlgw.1996.fc.6","url":null,"abstract":"Periodically-poled waveguides have become important for nonlinear frequency conversion because of the advantages inherent in quasi-phasematching and in the guided-wave nature of the interaction.1 A variety of techniques have been used to produce periodically-poled waveguides; one that has received particular attention is electric field poling, in which an electric field large enough to invert ferroelectric domains is applied to a periodic electrode.2,3 This approach to domain inversion suffers from difficulties inherent in controlling the width of the inverted domain, which is necessary in order to optimize the second harmonic output power.","PeriodicalId":262564,"journal":{"name":"Nonlinear Guided Waves and Their Applications","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126984547","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}