Continuously tunable distributed feedback polymer laser

Zhai, Tianrui; Cao, Fengzhao; Chu, Shijin; Gong, Qihuang

doi:10.1364/oe.26.004491

Cited by 18 publications

(12 citation statements)

References 27 publications

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“…The photoemissions were collected and collimated by the same objective lens, and finally coupled to a spectrometer. As shown in the inset of Figure 3b, the beam diameter was about 0.2 mm, which was measured by a knife-edge method [23]. Note that the absorption of the Si structure affected the lasing properties.…”

Section: Resultsmentioning

confidence: 93%

Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

Tong

Shi

et al. 2020

Polymers

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A compound cavity was proposed to achieve both whispering gallery mode (WGM) lasing and random lasing. The WGM-random compound cavity consisted of a random structure with an annular boundary, which was fabricated by a method combining both inkjet printing and metal-assisted chemical etching methods. An ultrathin polymer membrane was attached to the WGM-random compound cavity, forming a polymer laser device. A transformation from WGM lasing to random lasing was observed under optical pumping conditions. The laser performance could be easily tailored by changing the parameter of the WGM-random compound cavity. These results provide a new avenue for the design of integrated light sources for sensing applications.

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Section: Resultsmentioning

confidence: 93%

Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

Tong

Shi

et al. 2020

Polymers

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“…Shortly after the discovery of liquid droplet lasers, polymer solid‐state microsphere lasers were investigated . Due to the chemical flexibility, polymer materials can be easily formed into different configurations such as micro‐hemispheres, microdisks, microfibers, conical microcavity, and especially a significant number of DFB structures . In most of the works, polymers are used as host materials, except conjugated polymers .…”

Section: Soft‐matter Microlasers: Soft Materialsmentioning

confidence: 99%

Microlasers Enabled by Soft‐Matter Technology

Wang

Sun

2019

Advanced Optical Materials

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Soft‐matter microlasers are an interesting part of soft‐matter photonics, which are based on liquids, liquid crystals, polymers, biological materials, and fabricated mainly by solution‐processing approaches. Soft‐matter microlasers comprehend a multitude of attractive features, including low‐cost, mechanical flexibility, wide range wavelength tunability and, in some cases, biocompatibility, and biodegradability. As such, they are recognized as versatile candidates for efficient light sources with enhanced performances and applications as ultrasensitive physical, chemical, and biological sensors. Here, the recent developments of soft‐matter microlasers are reviewed in time and the prospect in this field is provided. First, the characteristics of the representative soft‐matter microlasers are discussed with focus on their laser structures, lasing mechanisms, fabrication approaches, and gain material origins, followed by an introduction about the current cutting‐edge soft‐technologies that are applied in soft‐matter microlasers. Afterward, their potential applications as wavelength tunable sources, sensors, and displays are highlighted. Finally, the work is summarized and the prospect of soft‐matter microlasers for expanding this emerging research field is presented.

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“…DFB lasers have attracted extensive attention due to their promising performance regarding mode selection and operational stability. Hence, DFB polymer lasers are a good platform for investigating how structural parameters impact laser operational properties [4,5,6,7,8]. In the realm of DFB configurations, the 1 st and 2 nd order laser cavities have already been comprehensively studied [9,10,11,12], especially 2 nd order DFB lasers, which has a feedback mechanism that was found to be provided by 2 nd order diffraction.…”

Section: Introductionmentioning

confidence: 99%

Operating Characteristics of High-Order Distributed Feedback Polymer Lasers

et al. 2019

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In this study, high-order distributed-feedback (DFB) polymer lasers were comparatively investigated. Their performance relies on multiple lasing directions and their advantages include their high manufacturing tolerances due to the large grating periods. Nine laser cavities were fabricated by spin-coating the gain polymer films onto a grating structure, which was manufactured via interference lithography that operated at the 2nd, 3rd, and 4th DFB orders. Low threshold lasing and high slope efficiency were achieved in high-order DFB polymer lasers due to the large grating groove depth and the large gain layer thickness. A high-order DFB configuration shows possible advantages, including the ability to control the lasing direction and to achieve multiple-wavelength lasers. Furthermore, our investigation demonstrates that the increase in threshold and decrease in slope efficiency with an increase in the feedback order can be limited by controlling the structural parameters.

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Continuously tunable distributed feedback polymer laser

Cited by 18 publications

References 27 publications

Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

Microlasers Enabled by Soft‐Matter Technology

Operating Characteristics of High-Order Distributed Feedback Polymer Lasers

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