distributed-feedback (DFB) lasers
Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings
... Distributed feedback (DFB) is commonly employed in semiconductor lasers to tailor the shape, symmetry, and fre- quency of the optical resonator eigenmodes, while simulta- neously allowing ...
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Optofluidic distributed feedback lasers with evanescent pumping : reduced threshold and angular dispersion analysis
... Distributed feedback (DFB) lasers are one of the most versatile and efficient laser ...include DFB semiconductor lasers for telecommunications, 1 polymer based organic ...
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The fabrication and lithography of conjugated polymer distributed feedback lasers and development of their applications
... a Distributed Feedback (DFB) ...medium. DFB lasers were introduced by Kogelnik and Shank in the 1970s [38], where interference patterns were used to introduce a periodic refractive ...
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Nanoimprinted distributed feedback lasers of solution processed hybrid perovskites
... nanoimprinted polymer gratings to fabricate distributed feedback (DFB) lasers. The lead acetate deposition route is shown to be an effective method for fabricating low-loss waveguides (loss ...
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Carbon‐bridged p‐phenylenevinylene polymer for high‐performance solution‐processed distributed feedback lasers
... resonator made of solution-processable materials have recently attracted great attention for their potential as inexpensive and high-throughput lasers. [1,2] Their interest lies in the prospect to obtain low cost, ...
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Design method for ultimate efficiency in linear cavity continuous wave lasers using distributed feedback
... fibre lasers feasible and ...co-doped DFB fibre laser by combining the holographic grating writing method and the hydrogen loaded photosensitive active fibre technology ...classic DFB cavity, in ...
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Riechel, Stefan (2002): Organic semiconductor lasers with two-dimensional distributed feedback. Dissertation, LMU München: Fakultät für Physik
... semiconductor lasers have great potential for many applications, ...organic DFB laser is merely used as a tunable solid-state laser, which is optically pumped by a compact primary ...
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PLACEMENT AND SIZING OF DISTRIBUTED GENERATORS IN DISTRIBUTED NETWORK BASED ON LRIC AND LOAD GROWTH CONTROL
... for distributed feedback (DFB) lasers designs and ...(TS-IC) DFB lasers in above threshold regime, by the means of the transfer matrix method (TMM), and the carrier rate ...
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High Efficiency, Low Power Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
... cascade lasers (QCLs) have proven to be very efficient coherent light sources in the mid-infrared region with a wide variety of applications, such as trace gas sensing, high-resolution spectroscopy, and free space ...
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High-Coherence Hybrid Si/III-V Semiconductor Lasers
... The distributed feedback semiconductor laser (DFB) has served as the near exclusive light source powering the fiber optic, long-haul network for over 30 ...the DFB laser to the limits of its ...
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Low Power Consumption Substrate Emitting DFB Quantum Cascade Lasers
... In the present work, an ultra-low power consumption substrate-emitting distributed feedback (DFB) quantum cascade laser (QCL) was developed. The continuous-wave (CW) threshold power dissipation is ...
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Temporal and frequency characteristics of distributed feedback dye lasers
... Slow Q-switching [2,3] is a technique which allows the reliable production of single longitudinal mode pulses in pulsed Nd:YAG lasers. In normal, or active Q switching, the cavity Q is switched from a low to a ...
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RGB and white-emitting organic lasers on flexible glass
... vertically-emitting distributed feedback (DFB) lasers are assembled onto a common ultra-thin glass membrane substrate and fully encapsulated by a thin polymer overlayer and an additional ...
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Continuous-wave highly-efficient low-divergence terahertz wire lasers
... cascade lasers (QCLs) have undergone rapid development since their demonstration, showing high power, broad-tunability, quantum-limited linewidth, and ultra-broadband ...(via distributed feedback ...
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10 W pulsed operation of substrate emitting photonic crystal quantum cascade laser with very small divergence
... High-power broad area substrate emitting photonic-crystal distributed feedback (DFB) quantum cascade lasers (QCLs) emitting around 4.73 μ m is reported. Two-dimensional centered rectangular ...
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Single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... cascade lasers utilising non-uniform second-order distributed feedback ...ridge-waveguide lasers of similar size, whilst maintaining similar threshold current densities for the ...
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Development, characterisation and analysis of narrow linewidth, single frequency DFB fibre lasers in the 1 5 µm 2 µm region
... long lasers with relatively low Er 3+ concentration [4, ...these lasers, the Bragg grating reflectors were written into a photosensitive fibre which was then spliced to the doped fibre, and as a result ...
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Monolithically integrated DFB lasers for tunable and narrow linewidth millimeter-wave generation
... the lasers are operating in a free- running regime and their instantaneous frequency fluctuations are ...two lasers but can be much wider in the presence of uncorrelated thermal drifts of the two optical ...
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ULTRA-HIGH BW OPTICAL COMMUNICATION USING OXYGEN PLASMA ASSISTED InP BASED HYBRID Si LASER
... of feedback system, light is amplified only by stimulated emission, may cause ...optical feedback, the sample is diced at a 7˚ with the normal to the polished facet plane, then an antireflection coating of ...
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Recovery of absorption line shapes with correction for the wavelength modulation characteristics of DFB lasers
... A wide variety of laser types are used for WMS and in this work we have reviewed the basic modulation properties of DFB lasers to identify some of the key issues that affect the design and operation of WMS ...
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