An active disordered medium able to lase is called a random laser rl. This option allows users to search by publication, volume and page selecting this option will search the current publication in context. The role of disorder, which results from limited accuracy of. Sep 14, 2007 optofluidic dye lasers are microfabricated liquid dye lasers enabled by the microfluidics technology. Introduction of random lasers in the field of optofluidics is a promising alternative to onchip laser integration with light and fluidic functionalities. Reconfigurable rgb dye lasers based on the laminar flow.
Onchip tunable optofluidic dye laser zengyan cai, azhenhua shen, haigang liu, huan yue,a yun zou,b and xianfeng chena, ashanghai jiao tong university, state key laboratory of advanced optical communication systems and networks, department of physics and astronomy, 800 dongchuan road, shanghai 200240, china bshanghai key laboratory of crime science evidence, shanghai research. Random lasers are spectrally distinguished from conventional lasing systems by randomly distributed sharp spikes over the emission. Pdf optofluidic laser based on a hollowcore negativecurvature. The random fiber laser offers greater power performance compared to conventional counterparts in a simple design without environmentally sensitive components. Among these areas, random lasers are especially important because of their unique properties and rich underlying laser physics, which are of fundamental scientific. The hcarrow device is formed by a reservoir connected to two channels. Optically pumping the microchannel filled with polyfluorene solution and by dispersing nanoparticles in the solution, random lasing in the microchannel is obtained.
The integration of dye lasers with microfluidics not only facilitates the implementation of complete labonachip systems, but also allows the dynamical control of the laser properties which is not achievable with solidstate optical components. Sarkar a and shivakiran bhaktha b n 2015 signatures of periodicity and randomness in the angular emission profile of a 2d onaverage periodic optofluidic random laser opt. Precision laser direct writing of polymer optical waveguides and optofluidic systems haldor hartwig, ekaterina sergeeva, nils thomas, dennis hohlfeld institute for electronic appliances and circuits, university of rostock, germany mailto. Optofluidic laser array based on stable high q fabryperot. The multiple lightscattering event induced by the microscale human cells promotes random lasing and influences the lasing properties in term of laser modes, spectral wavelengths, and lasing thresholds. Then, some applications of the inplane liquid lenses will be presented in the third section. Here emerges the optofluidic bio laser laser, which is a new class of laser using biochemical or biological molecules in the gain medium. This is a list of researchers in optofluidics, a research and technology area that combines microfluidics and optics and has applications in displays, biosensors, labonchip devices, lenses, and molecular imaging and energy. To investigate the effectiveness of this sensor, we perform a measurement of ri. We present an innovative mirrorless optofluidic random laser where the optical cavity has been replaced by a random scattering structure. In optofluidics, optical properties of fluids are studied by infiltrating them in microfluidic channels 17. Highly directional random laser in a hcarrow microfluidic.
Abstractan optofluidic laser based on a hollowcore negativecurvature fiber hcncf is proposed and demonstrated. Varioptic specializes in the development of electrowetting based lenses for numerous applications. Clearly, this method is applicable only for static systems and requires a priori knowledge of the. Optofluidic laser array based on stable highq fabryperot microcavitieswenjie wang a, chunhua zhou a, tingting zhang a, jingdong chen a, shaoding liu a and xudong fan ab a key lab of advanced transducers and intelligent control system of ministry of education, taiyuan university of technology, 79 yingze street, taiyuan 030024, pr china. Due to the lateral laser emission, the camera was placed perpendicularly to the fiber axis. Optofluidic lasers are emerging as a new technology platform for novel onchip photonic devices and sensitive biochemical sensors. The fraunhofer diffraction pattern demonstrates excellent coherence and directionality for our random laser. Optofluidic lens actuated by laserinduced solutocapillary forces. We demonstrate random lasing due to inherent disorder in a dye circulated structured microfluidic channel. We consistently observe rl modes which are varied by. Optofluidic lens actuated by laserinduced solutocapillary. Top closeup view of the microfluidic structure of a multicolor dye laser which contains dye laser array, optical switches and beam combiner.
Thus, the rgb plasmonic random laser of cascaded polymer slices is fabricated. Onchip tunable optofluidic dye laser zengyan cai, azhenhua shen, haigang liu, huan yue,a yun zou,b and xianfeng chena, ashanghai jiao tong university, state key laboratory of advanced optical communication systems and networks, department of physics and. The gain material was a 4 dicyanomethylene2methyl6pdimethylaminostyryl4hpyran dcm laser dye solution with a 1. Active control of the emission of an optofluidic random laser. Optofluidic refractive index sensor based on partial reflection. Organic random laser in an optofluidic chip fabricated by femtosecond laser. Redgreenblue plasmonic random lasing from cascaded.
Optofluidic tunable lenses for inplane light manipulation. Random lasing in a lotus leaf, with a wide tunable spectrum from planar liquid waveguide gain channels is described. The lasers are operated by filling the dfb laser resonator with a dye solution by capillary action and optical. Here emerges the optofluidic biolaser laser, which is a new class of laser using biochemical or biological molecules in the gain medium. The ones marked may be different from the article in the profile. Potential applications of optofluidic random lasers for onchip sensors are discussed. Microfluidic channels were fabricated and integrated with optical waveguides using a single femtosecond laser. Optofluidic assembly of microdisk lasers on a silicon chip. An optofluidic random laser source for labonchip applications is presented. Effect of particle on the lasing threshold of optofluidic. Osa tunability of optofluidic distributed feedback dye lasers. Although this is a very new area, the first cell laser has already been demonstrated with cytoplasm containing egfp molecules as the gain medium.
Spectra characterization of the random laser the rgb plasmonic random laser is composed of red, green, and blue components, corresponding to mdmoppv slice doped with ag nps, f8bt slice doped with ag nps and pfo slice doped with ag nps. A thin liquid dye layer was held between the lotus leaf slice and an sio 2 coverslip refractive index of n 1 1. Optofluidic dye lasers are microfabricated liquid dye lasers enabled by the microfluidics technology. Single mode operation was shown in an optofluidic random laser of 3 mm long structured pdms 53. Hawkins,2 and holger schmidt1 1 school of engineering, university of california santa cruz, 1156 high street, santa cruz, california 95064, usa 2 electrical and computer engineering department, brigham young university, provo, ut 84602 usa. Organic random laser in an optofluidic chip fabricated by femtosecond laser article pdf available in proceedings of spie the international society for optical engineering 7585 february 2010. The dfofl laser emission was absorbed by the reagent in the capillaries. This is a list of researchers in optofluidics, a research and technology area that combines microfluidics and optics and has applications in displays, biosensors, labonchip devices, lenses, and molecular imaging and energy current research and technologies. We consistently observe rl modes which are varied by changing the pumping conditions. Note that the relative noise level in the laser output appears to be orders of magnitude lower than that in. The wavelength can be selected by optical switches. A random fiber laser can be scaled to the kilowatt level of output power at the designated wavelength, creating a new direction for highpower optical sources. A stable optofluidic dye laser with a low threshold of 15.
Origin of light scattering in dye doped polymeric waveguides. Organic random laser in an optofluidic chip fabricated by. We investigate the tunability of optofluidic distributed feedback dfb dye lasers. The pdms posts also provide support for the microfluidic channel. Optofluidic lasers and their biosensing applications. At moderate pump intensities 200400 kwcm2 and 10 hz repetition rate, stable laser output lasted longer than 20 minute and the chip can be reused for many times without noticeable degradation.
The lotus leaf shows multiple scattering from the micropapilla and nanoscale coralloid tomentum on its surface. This cited by count includes citations to the following articles in scholar. Optofluidic refractive index sensor based on partial. Pdf organic random laser in an optofluidic chip fabricated. Single mode optofluidic distributed feedback dye laser. Biofluidic random laser cytometer for biophysical phenotyping. We achieve emission control at any desired wavelength by iteratively shaping the optical pump profile. Benefited from the divergent incident light and the output fibers with different tilting angles, we have achieved highly sensitive ri sensing in a wide range from 1. Random lasing action in a polydimethylsiloxane wrinkle induced. Redgreenblue plasmonic random lasing from cascaded polymer. Precision laser direct writing of polymer optical waveguides. Optofluidic laser array based on stable highq fabryperot.
Replica symmetry breaking in a weakly scattering optofluidic. Pdf an optofluidic laser based on a hollowcore negativecurvature fiber. Selecting this option will search all publications across the scitation platform selecting this option will search all publications for the publishersociety in context. The lasers rely on lightconfinement in a nanostructured polymer film where an array of nanofluidic channels constitutes a third order bragg grating dfb laser resonator with a central phaseshift. Disordered optics, which is the subject of light transport through nonuniform media, has attracted considerable interest and has numerous potential applications such as imaging, remote sensing, random lasers, and solar energy 1. Bottom pneumatically tunable optofluidic dye laser chip in operation. We report the observation of replica symmetry breaking rsb in a weakly scattering optofluidic random laser orl. Tunable on chip optofluidic laser avraham bakal,1,a christoph vannahme,2 anders kristensen,2 and uriel levy1,b 1department of applied physics, the benin school of engineering, the center for nanoscience and nanotechnology, the hebrew university of jerusalem, jerusalem 91904, israel 2department of micro and nanotechnology, technical university of denmark, dtu nanotech. Osa tunability of optofluidic distributed feedback dye.
The laser remains single mode at pump levels as high as 8 mjcm2. Hawkins,2 and holger schmidt1 1 school of engineering, university of california santa cruz, 1156 high street, santa cruz, california 95064, usa. In this report, a random laser cytometer is demonstrated in an optofluidic device filled with gain medium and human breast normalcancerous cells. Presently at department of physics and meteorolog y. In the past few years, various types of optofluidic lasers have been developed. Optofluidic and related research has led to the formation of a number of new products and startup companies. There are numerous research groups worldwide working on optofluidics, including those listed below. Optofluidic laser array based on stable high q fabry. We demonstrate a novel optofluidic refractive index ri sensor with high sensitivity and wide dynamic range based on partial reflection. Distributed fibre optofluidic laser for chipscale arrayed. In our experiments, the random laser was designed using a sandwich structure. The submicronthick circular capillary tubes embedded in the cladding of the hcncf act as antiresonant elements and are used as both a resonator and dye microfluidic channels.
Optofluidics is a research and technology area that combines the advantages of microfluidics and optics. Sarkar a and shivakiran bhaktha b n 2015 signatures of periodicity and randomness in the angular emission profile of a 2d onaverage periodic optofluidic random laser. The sensing molecules are present in a fluidic environment, such as within microfluidic devices. The fabrication of the optofluidic dfb dye laser uses the same replica molding soft. Active control of the emission of an optofluidic random laser by nicolas bachelard, xavier noblin, sylvain gigan and patrick sebbah no static citation data no static citation data cite. Owing to exotic optical responses, metallic nanoparticles and nanostructures are finding broad applications in laser science, leading to numerous design variations of plasmonic nanolasers. Raman fiber lasers provide versatile platforms to obtain highbrightness lasing over a broad wavelength range.
The photothermal effect is a very common phenomenon both in microscopic and macroscopic scale. Here, we study the weakly scattering optofluidic random laser orl, shown in fig. Mar 23, 2017 we demonstrate a novel optofluidic refractive index ri sensor with high sensitivity and wide dynamic range based on partial reflection. Applications of the technology include displays, biosensors, labonchip devices, lenses, and molecular imaging tools and energy. Director of research, institut langevin, cnrs, france and professor of physics. Potential applications for onchip sources and sensors are discussed. Optical particle sorting on an optofluidic chip kaelyn d. Random lasing is reported in a dyecirculated structured polymeric microfluidic channel. Pdf replica symmetry breaking in a weakly scattering optofluidic. The random laser uses a turbid gain medium, where stochastically formed, closedloop scattering paths provide optical feedback and generate. Reconfigurable rgb dye lasers based on the laminar flow control in an optofluidic chip yue kong,1,2 hailang dai,1,2 xie he,1,2 yuanlin zheng,1,2,3 and xianfeng chen1,2,4 1the state key laboratory on fiber optic local area communication networks and advanced optical communication systems, school of physics and astronomy, shanghai jiao tong university, shanghai 200240, china. The sensing molecules are present in a fluidic environment, such as microfluidic devices 1 6, within a live cell cytosol 7 or, more broadly, interstitial tissue 8, 9. Bn shivakiran bhaktha, n bachelard, x noblin, p sebbah.
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