Capacitive-mesh output couplers for optically pumped far-infrared lasers

Weitz, David A.; Skocpol, W. J.; Tinkham, M.

doi:10.1364/ol.3.000013

Cited by 35 publications

(8 citation statements)

References 9 publications

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“…The cause of this deficiency is a vivid lack of suitable materials from which to form the basic elements crucial to THz technology implementation on a large scale. Despite the numerous possible applications [11][12][13][14], presently high-power THz sources, efficient detectors, switches, modulators, filters, and other basic elements are not widely available. Metamaterials are optimistic candidates to correct this problem [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

O’Hara

Смирнова

Azad

et al. 2007

Active and Passive Electronic Components

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The properties of planar, single-layer metamaterials, or metafilms, are studied by varying the structural components of the splitring resonators used to comprise the overall medium. Measurements and simulations reveal how minor design variations in split-ring resonator structures can result in significant changes in the macroscopic properties of the metafilm. A transmissionline/circuit model is also used to clarify some of the behavior and design limitations of the metafilms. Though our results are illustrated in the terahertz frequency range, the work has broader implications, particularly with respect to filtering, modulation, and switching devices.

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Section: Introductionmentioning

confidence: 99%

Effects of Microstructure Variations on Macroscopic Terahertz Metafilm Properties

O’Hara

Смирнова

Azad

et al. 2007

Active and Passive Electronic Components

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“…These metamaterials act in accordance with Babinet's principle and show a resonantly enhanced transmission in place of absorption [19]. These structures may have applications in such fields as astronomy and FIR spectroscopy [20], as well as in specific devices such as laser cavity output couplers [21], [22] and Fabry-Perot interferometers [23]. This could be of especial importance in situations where typical FIR filters and frequency selective surfaces consisting of metallic grids, meshes [24], [25], and other structures [26], [27], [28], [29], [30] are less than ideal.…”

Section: Discussionmentioning

confidence: 97%

Metamaterials for Novel Terahertz and Millimeter Wave Devices

Landy

Chen

O’Hara

et al. 2007

2007 International Symposium on Signals, Systems and Electronics

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We present experimental results of metamaterials operating at terahertz and mm-wave frequencies. Metamaterials consist of a single layer of 200nm thick gold on a doped or undoped semiconducting substrate. By optical and electronic doping of supporting semiconducting substrates we show external control of planar arrays of metamaterials, characterized with terahertz time domain spectroscopy. Both methods yield metamaterial / semiconductor devices which can be utilized as switches or modulators, enabling modulation of THz Transmission by 50 percent. Experiments are supported by simulations and results agree well. Because of the universality of metamaterial response over many decades of frequency, these results have implications for other regions of the electromagnetic spectrum and will undoubtedly play a key role in future demonstrations of novel high-performance devices.

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“…To explore the possibility of efficiency enhancement, calculations of cavity loss for various structures and dimensions using theory for fundamental mode have been done [3]. For THz range, appropriate values of T have also been calculated for capacitive mesh filters [4], which are popularly used as output coupler in OPML.…”

Section: Efficiency Calculation Of Opmlmentioning

confidence: 99%