Organic Thin Films for Photonics Applications最新文献_第7页

Liquid Crystalline Polymers for Electroluminescence 电致发光用液晶聚合物

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.wd.3

D. Bradley, M. Grell, K. L. Brandon, M. Turner, P. Bentley, D. Dunmur, E. Woo, M. Inbasekaran

引用次数: 0

Characterization of electrooptic polymers with high µβ chromophores for photonic device applications 用于光子器件的高µβ发色团电光聚合物的表征

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.23

Antao Chen, S. Garner, A. Yacoubian, W. Steier, Jinghong Chen, A. Harper, Jingsong Zhu, M. He, Shajing Sun, Fang Wang, Younsoo Ra, S. Mao, Cheng H. Zhang, L. Dalton, Datong Chen, H. Fetterman

引用次数: 0

Passive alignment of optic fiber array using silicon V-grooves monolithically integrated with polymer waveguide devices 用v型硅沟槽与聚合物波导器件集成的光纤阵列无源对准

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.21

Antao Chen, M. Ziari, W. Steier

{"title":"Passive alignment of optic fiber array using silicon V-grooves monolithically integrated with polymer waveguide devices","authors":"Antao Chen, M. Ziari, W. Steier","doi":"10.1364/otfa.1997.the.21","DOIUrl":"https://doi.org/10.1364/otfa.1997.the.21","url":null,"abstract":"Packaging is the crucial link between a laboratory demonstrated device and a reliable component in a practical system. To achieve and maintain the sub-micron alignment tolerances between fiber and waveguide is the major factor that makes the packaging of photonic devices labor intensive, time consuming, and costly[1, 2]. Fiber arrays are important in WDM multiplexers and demultiplexers where multiple fiber attachment is essential. To avoid the complexity of the active alignment and attachment of individual fiber to each waveguide, we experimented with the passive alignment of fiber arrays with silicon V-grooves. The V-grooves are made on the same substrate that the polymer device is built on. The waveguide channels aligned to the center of the V-grooves are also processed together with the V-grooves using the same photolithography and etching technology. This technique is fundamentally different from the use of silicon V-grooves as fiber carrier for LiNbO3 and semiconductor devices, in which V-groove and devices are made on different substrate and bonded together later[3,4]. The width and the position of V-grooves can be fabricated in submicron precision with mature microelectronics technology. The fiber placed in the V-groove is entirely self-aligned in both vertical and lateral directions. The idea and some fabrication results of this approach have been presented earlier[5]. In this paper, our recent results of fiber coupling experiments are reported.","PeriodicalId":378320,"journal":{"name":"Organic Thin Films for Photonics 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":"129564884","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}

引用次数: 1

Accordion Polymers with Aromatic Donors 具有芳香供体的手风琴聚合物

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.30

W. Herman, J. Stenger-Smith, A. Chafin, R. Gratz, R. Hollins, R. Yee, G. Lindsay

引用次数: 0

Conjugated Polymers as Materials for Thin Film Solid State Lasers 共轭聚合物作为薄膜固体激光器的材料

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.wd.1

F. Hide, M. Díaz‐García, M. McGehee, B. J. Schwartz, A. Heeger

{"title":"Conjugated Polymers as Materials for Thin Film Solid State Lasers","authors":"F. Hide, M. Díaz‐García, M. McGehee, B. J. Schwartz, A. Heeger","doi":"10.1364/otfa.1997.wd.1","DOIUrl":"https://doi.org/10.1364/otfa.1997.wd.1","url":null,"abstract":"Optically pumped gain narrowing and lasing have been demonstrated in submicron thick films, neat and undiluted, of photoluminescent conjugated polymers. The dramatic collapse of the emission line width occurs at very low pump energy thresholds (~10 μJ/cm2). Gain narrowing is found in over a dozen different conjugated polymers representing a variety of molecular structures, including poly(p-phenylenevinylene), poly(p-phenylene) and polyfluorene derivatives; the emission wavelengths in these materials span the visible spectrum. The short gain lengths in conjugated polymers are attributed to the high density of chromophores, the large density of states associated with the interband (π-π*) transition in quasi-one-dimensional systems, and the Stokes shift which minimizes self-absorption and allows optical pumping to the excited state without simultaneously stimulating emission (thereby yielding population inversion). Lasing and gain narrowing are compared for a soluble poly(phenylene vinylene) derivative using two different resonant structures: planar waveguides and microcavities. In both cases, the gain narrowing threshold is at 0.05 - 0.1 μJ per 10 ns pulse focused to approximately 1.5 mm. Single mode microcavity lasers are obtained when a cavity resonance occurs at the wavelength where the gain of the polymer is a maximum. Low threshold lasing (threshold more than an order of magnitude below that observed in planar waveguides and microcavities) has also been demonstrated using distributed feedback in a planar chip film configuration.","PeriodicalId":378320,"journal":{"name":"Organic Thin Films for Photonics 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":"129993343","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}

引用次数: 0

In situ trimming of polymer optical waveguides by rapid photobleaching for tuning device specifications 用于调谐器件规格的快速光漂白聚合物光波导的原位修整

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.fb.2

Antao Chen, F. I. Marti-Carrera, V. Chuyanov, S. Garner, W. Steier, S. Mao, Younsoo Ra, L. Dalton, Yongqian Shi

引用次数: 2

Modified attenuated total reflection for the fast and routine electrooptic measurements of nonlinear optical polymer thin films 非线性光学聚合物薄膜快速常规电光测量的修正衰减全反射

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.18

Antao Chen, V. Chuyanov, S. Garner, W. Steier, L. Dalton

{"title":"Modified attenuated total reflection for the fast and routine electrooptic measurements of nonlinear optical polymer thin films","authors":"Antao Chen, V. Chuyanov, S. Garner, W. Steier, L. Dalton","doi":"10.1364/otfa.1997.the.18","DOIUrl":"https://doi.org/10.1364/otfa.1997.the.18","url":null,"abstract":"In the course of developing EO polymers, a convenient and fast method to obtain the electrooptic (EO) coefficients, r33 and r13, is highly desirable. Some of the existing EO measurement techniques such as Fabry-Perot interferometry(1) and ellipsometry(2) require metal deposition and electrode processing for each test sample. Therefore, they are not suited for daily sample testing. Second harmonic generation (SHG) is an indirect method to measure the EO coefficients(3). It is usually performed with 1.064 Nd:YAG laser and encounters difficulties with polymers that contain high µβ chromophores because these chromophores usually have red-shifted absorption peaks that causes the Kleiman symmetry, a fundamental assumption of this technique, to break down. Attenuated total reflection (ATR) can directly measure the EO coefficients with no restriction on the wavelength of the absorption peak. One measurement scan provides the refractive index, the thickness, and an EO coefficient. Typically, the thin film electrode in contact with the test sample is made of Au or Ag in conventional ATR techniques(4). These metal thin films are soft and not durable for repeated measurements. The curve fitting algorithm for data processing(4, 5) is also inconvenient for fast sample evaluation. In this paper, a modified ATR technique for routine EO measurement is presented which does not require electrode preparation for each test sample and uses a simple algorithm for data processing.","PeriodicalId":378320,"journal":{"name":"Organic Thin Films for Photonics Applications","volume":"27 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":"121073793","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}

引用次数: 12

Bacteriorhodopsin Opto-Electronic Synapses 细菌视紫红质光电突触

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.11

D. Shelton

引用次数: 0

Nonlinear absorption in CuPc-SiO2 Composite 纸杯- sio2复合材料的非线性吸收

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.the.2

E. Blanco, R. Litrán, M. Ramírez-Del-Solar, F. Aranda, D. Rao, D. N. Rao, J. Akkara, M. Nakashima, S. Tripathy

{"title":"Nonlinear absorption in CuPc-SiO2 Composite","authors":"E. Blanco, R. Litrán, M. Ramírez-Del-Solar, F. Aranda, D. Rao, D. N. Rao, J. Akkara, M. Nakashima, S. Tripathy","doi":"10.1364/otfa.1997.the.2","DOIUrl":"https://doi.org/10.1364/otfa.1997.the.2","url":null,"abstract":"Recently macrocyclic organic dyes have attracted a lot of attention as possible candidates for applications in optical power limiters and pulse shaping devices. The fundamental requirement for power limiting is that the system must exhibit fluence dependent reverse saturable absorption. Copper Pthalocyanines possess a larger excited state absorption cross section than a ground state absorption cross section. They are thus suitable candidates for limiting applications. Most of the nonlinear optical studies have been done for solutions of the dyes1. For applications such as intracavity pulse shaping devices a solid material is more attractive than a solution2. In this paper we report nonlinear absorption studies of Copper Pthalocyanine, CuPc, in solution in sulfuric acid as well as incorporated in a Silica matrix host. The concentration of the solution was 5.75 x 10-4 Molar. The composite had a concentration of 1 x 10-4 Molar in the sol. Upon drying of the gel we estimate a similar concentration for the composite as in the solution given the reduction in volume. The thickness of the composite is of 4 mm. The solution was held in 1 mm thick spectroscopic grade glass cuvettes. The CuPc/silica composite was obtained by the Sol-gel method from the hydrolysis of tetramethoxysilane (TMOS). The reaction of TMOS with acidic water (pH=2) was promoted by means of 20 kHz ultrasound energy. The resulting gel was kept drying at room temperature for two weeks. We observe marked differences in the linear absorption spectrum of the solution and the composite. These changes are attributable to aggregation of the Copper Pthalocyanine molecules in the pores of the silica matrix as well as to the interaction between the dye molecules and the matrix. The linear absorption spectrum for both samples is shown in Fig. 1.","PeriodicalId":378320,"journal":{"name":"Organic Thin Films for Photonics 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":"123088035","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}

引用次数: 0

Origin of Optical Gain and Stimulated Emission in Conjugated Polymers 共轭聚合物中光学增益和受激发射的来源

Organic Thin Films for Photonics Applications Pub Date : 1900-01-01 DOI: 10.1364/otfa.1997.wd.4

C. Spiegelberg, A. Schülzgen, M. Morrell, P. Allemand, B. Kippelen, N. Peyghambarian

引用次数: 0