Dye lasing in optically manipulated liquid aerosols

Karadağ, Yasin; Aas, Mehdi; Jonáš, Alexandr; Anand, Smriti; McGloin, David; Kiraz, Alper

doi:10.1364/ol.38.001669

Cited by 18 publications

(11 citation statements)

References 17 publications

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“…As an alternative to superhydrophobic surfaces, airborne glycerol-water droplets were used and these were kept in position using optical trapping. 181 Spherical WGM resonators can also be fabricated from solid gain materials, e.g. if dye doped polymer microspheres are used.…”

Section: Spherical Wgm Resonatorsmentioning

confidence: 99%

Organic Lasers: Recent Developments on Materials, Device Geometries, and Fabrication Techniques

2016

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Organic dyes have been used as gain medium for lasers since the 1960s, long before the advent of today's organic electronic devices. Organic gain materials are highly attractive for lasing due to their chemical tunability and large stimulated emission cross section. While the traditional dye laser has been largely replaced by solid-state lasers, a number of new and miniaturized organic lasers have emerged that hold great potential for lab-on-chip applications, biointegration, low-cost sensing and related areas, which benefit from the unique properties of organic gain materials. On the fundamental level, these include high exciton binding energy, low refractive index (compared to inorganic semiconductors), and ease of spectral and chemical tuning. On a technological level, mechanical flexibility and compatibility with simple processing techniques such as printing, roll-to-roll, self-assembly, and soft-lithography are most relevant. Here, the authors provide a comprehensive review of the developments in the field over the past decade, discussing recent advances in organic gain materials, which are today often based on solid-state organic semiconductors, as well as optical feedback structures, and device fabrication. Recent efforts toward continuous wave operation and electrical pumping of solid-state organic lasers are reviewed, and new device concepts and emerging applications are summarized.

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Section: Spherical Wgm Resonatorsmentioning

confidence: 99%

Organic Lasers: Recent Developments on Materials, Device Geometries, and Fabrication Techniques

2016

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“…[143] To facilitate effective integration, many free-space coupling techniques have been exploited. [144][145][146][147] For example, some researchers inserted optical fibers into the chips and trap the droplet inside the microfluidic channel with optical tweezers, [145] which provides a feasible way to trap droplet resonators inside microfluidic channels and perform sensing experiments. As shown in Figure 7a, droplets with different size can be trapped by optical tweezers near the tip of an excitation fiber such that WGMs inside droplets can be excited with a tunable laser.…”

Section: Liquid Resonatorsmentioning

confidence: 99%

Microfluidic Whispering Gallery Mode Optical Sensors for Biological Applications

Wang

Zeng

Humbert

et al. 2020

Laser & Photonics Reviews

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Whispering gallery mode (WGM) resonators have been exploited as a highly sensitive and efficient sensing technique in the past few years. They offer the advantages of ultrahigh sensitivity, compact size, and label-free sensing capability. More recently, with the rapid development of microfluidic technologies, many integrated WGM sensors, by combining the portability of lab-on-chip devices and the high sensitivity of WGM resonators, have emerged. The capabilities of efficient sample handling and multiplexed analyte detection offered by these systems have led to many biological and chemical sensing applications, especially for the detection of single particle or biomolecule. In this review, different sensing mechanisms based on integrated whispering gallery mode resonators are introduced. Various geometries of WGM cavities including solid, liquid, and hollow resonators and a detailed discussion on their integration with microfluidic devices are also covered. Different types of packaging schemes and integration methods are compared in terms of ease of fabrication and device performance. Finally, recent applications of microfluidic-based WGM sensors for detecting biological and chemical target molecules are discussed, with a prospect on future challenges and trends of development in microfluidics for multiplexed detection.

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“…1). Thanks to the dye gain medium placed in the droplets, dye lasing was observed for two experimental configurations: glycerol/water droplets manipulated in air 10 and immersion oil droplets manipulated in water. 11 In both cases, tens of laser emission spectra could be recorded from the trapped droplets before photobleaching of the dye contained in the droplets.…”

Section: Droplet Resonator Lasers Manipulated By Optical Tweezersmentioning

confidence: 99%

Droplet resonator based optofluidic microlasers

et al. 2014

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We introduce tunable optofluidic microlasers based on active optical resonant cavities formed by optically stretched, dye-doped emulsion droplets confined in a dual-beam optical trap. To achieve tunable dye lasing, optically pumped droplets of oil dispersed in water are stretched by light in the dual-beam trap. Subsequently, resonant path lengths of whispering gallery modes (WGMs) propagating in the droplet are modified, leading to shifts in the microlaser emission wavelengths. We also report lasing in airborne, Rhodamine B-doped glycerolwater droplets which were localized using optical tweezers. While being trapped near the focal point of an infrared laser, the droplets were pumped with a Q-switched green laser. Furthermore, biological lasing in droplets supported by a superhydrophobic surface is demonstrated using a solution of Venus variant of the yellow fluorescent protein or E. Coli bacterial cells expressing stably the Venus protein. Our results may lead to new ways of probing airborne particles, exploiting the high sensitivity of stimulated emission to small perturbations in the droplet laser cavity and the gain medium.

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Dye lasing in optically manipulated liquid aerosols

Cited by 18 publications

References 17 publications

Organic Lasers: Recent Developments on Materials, Device Geometries, and Fabrication Techniques

Organic Lasers: Recent Developments on Materials, Device Geometries, and Fabrication Techniques

Microfluidic Whispering Gallery Mode Optical Sensors for Biological Applications

Droplet resonator based optofluidic microlasers

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