High-brightness mid-infrared photonic-crystal distributed-feedback lasers

Felix, C. L.; Vurgaftman, I.; Bewley, W. W.; Bartolo, R.E.; Lindle, J. R.; Meyer, J. R.; Lee, H.; Martinelli, Ramon U.

doi:10.1080/09500340110108585

Cited by 3 publications

(1 citation statement)

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“…From a rate equation analysis it can be shown that the modal gain of the main lasing mode is always slightly smaller than the cavity loss at steady-state operation and that d G has a typical value of ϳ10 24 cm 21 for an injection current that is ten times above the threshold value. 7 In this Letter we consider only multiple transverse modes with the same frequency and assume that the main mode and the side modes correspond, respectively, to the centered mode with the lowest propagation loss and the side modes with the second-lowest propagation loss shown in Fig. 2(b).…”

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Engineering transverse Bragg resonance waveguides for large modal volume lasers

Liang

Choi

et al. 2003

Opt. Lett.

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We recently analyzed a new class of laser amplifier based on transverse Bragg ref lection. We show that the unique properties of Bragg confinement make it possible through modal loss discrimination to achieve single-transverse-mode operation with transverse modal size that is an order of magnitude larger than in lasers that depend on total internal ref lection A unique feature of the TBR structures is the large modal cross section, which makes them particularly attractive for applications such as high-power delivery and high-power lasers, for which the maximal power is limited by the transverse modal size and the power density at catastrophic optical mirror damage of the end facets. 4,5 In conventional waveguides based on total internal ref lection, to achieve good beam quality (single-lateral-mode operation) the core width is typically limited to several micrometers, such as in the well-known ridge waveguide laser. 5In this Letter we investigate the condition of single-transverse-mode guiding in a TBR waveguide with a much larger core width and demonstrate that the TBR waveguide can possess a much larger core width and thus can have a significant advantage over the traditional total internal ref lection waveguides for high-power laser applications. Futhermore, the basic idea proposed here can be used to increase the core widths of other types of photonic crystal waveguides.As shown in Fig. 1(a), the TBR waveguide consists of a slab (with dielectric constant´c o and width W co ) f lanked by two Bragg ref lectors, which alternate between a high-index layer with dielectric constant 1 and layer thickness L 1 and a low-index layer with dielectric constant´2 and layer thickness L 2 . In this Letter we consider only small index contrast, with co ´2 Х´1. We further require that L 1 L 2 b͞2, which provides optimal conf inement according to the results in Refs. 2 and 3. The z dependence of the guided mode can be described by a complex propagation constant b b R 1 ib I by the factor exp͑2ibz͒.Using the boundary condition of no incoming wave at the cladding edge, we f ind that a guided mode in a passive TBR waveguide satisf ies the following phase condition 2,3 :where m is an integer, S ͓jkj, Dk k 0 2 p͞b, and k v 2 ͑´1 2´2͒͑͞2k 0 c 2 p͒. k is the coupling constant

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confidence: 99%

Engineering transverse Bragg resonance waveguides for large modal volume lasers

Liang

Choi

et al. 2003

Opt. Lett.

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Nano photoelectric material structures — Photonic crystals

Wang

Yang

2013

2013 International Symposium on Next-Generation Electronics

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Nano Photoelectric Material Structures – Photonic Crystals

Wang

Yang

2013

AMR

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Photonic crystals are periodic dielectric structural materials that have photonic band gaps, and are divided into on-dimensional, two-dimensional, and three-dimensional structures based on their spatial distributions. One-dimensional photonic crystals have already found real-world applications. Three-dimensional photonic crystals are still in the experimental phase in laboratories. Due to their superior characteristics, photonic crystal materials are sure to be widely developed and applied in the future. This paper briefly introduces the principle of photonic crystals, facts about their theoretical research, production and preparation of materials, as well as their related applications. Photonic crystal materials have a lot of potential, and could be one of the most significant materials of this century. Since the concept was proposed in the late 80’s of the previous century, the research and application of photonic crystals has advanced significantly. Currently, photonic crystals are already used in fiber optics as well as semiconductor lasers. This paper introduces the structures of various types of photonic crystals, including photonic crystals with semiconductor and fiber optic material bases, and describes some of the special optoelectronic characteristics and possible applications of photonic crystals. Photonic crystals can be used in the production of many new types of optoelectronic devices. Most significantly, they can dramatically reduce the size of components and result in dense integration. Photonic crystals are expected to have a revolutionary impact on the development of optoelectronic technologies.

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High-brightness mid-infrared photonic-crystal distributed-feedback lasers

Cited by 3 publications

References 28 publications

Engineering transverse Bragg resonance waveguides for large modal volume lasers

Engineering transverse Bragg resonance waveguides for large modal volume lasers

Nano photoelectric material structures — Photonic crystals

Nano Photoelectric Material Structures – Photonic Crystals

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High-brightness mid-infrared photonic-crystal distributed-feedback lasers

Cited by 3 publications

References 28 publications

Engineering transverse Bragg resonance waveguides for large modal volume lasers

Engineering transverse Bragg resonance waveguides for large modal volume lasers

Nano photoelectric material structures &#x2014; Photonic crystals

Nano Photoelectric Material Structures – Photonic Crystals

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Nano photoelectric material structures — Photonic crystals