Staggered Broad-Band Reflecting Multilayers

Heavens, O.S.; Liddell, Heather M.

doi:10.1364/ao.5.000373

Cited by 64 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to overcome the narrow spectral bandwidth, varying the individual layer thickness was investigated. Heavens and Liddell [9] proposes arithmetically and geometrically varying layer thicknesses in order to increase the bandwidth of Bragg reflectors created using a HgCdTe/CdTe material system. Design of the varying thickness mirrors is discussed in more detail elsewhere [10].…”

Section: Device Structure and Fabricationmentioning

confidence: 99%

Responsivity and lifetime of resonant-cavity-enhanced HgCdTe detectors

Wehner

Musca

Sewell

et al. 2006

Solid-State Electronics

View full text Add to dashboard Cite

Section: Device Structure and Fabricationmentioning

confidence: 99%

Responsivity and lifetime of resonant-cavity-enhanced HgCdTe detectors

Wehner

Musca

Sewell

et al. 2006

Solid-State Electronics

View full text Add to dashboard Cite

“…In order to overcome the narrow spectral bandwidth, vary- ing the individual layer thickness was investigated. Heavens [11] proposes arithmetically and geometrically varying layer thicknesses in order to increase the bandwidth of Bragg reflectors created using a HgCdTe/CdTe material system. Figure 7 illustrates the increase in bandwidth for an arithmetically varying reflector of 30 1 2 bi-layers compared with Hg (0.6) Cd (0.4) Te/CdTe quarter wave stack of 30 1 2 periods.…”

Section: Modellingmentioning

confidence: 99%

Responsivity and Lifetime of Resonant Cavity Enhanced HgCdTe Detectors

Wehner¹,

Musca²,

Sewell³

et al.

2006 IEEE Aerospace Conference

View full text Add to dashboard Cite

Resonant cavity enhanced HgCdTe structures have been grown by molecular beam epitaxy, and photoconductors have been modelled and fabricated based on these structures. Responsivity has been measured and shows a peak responsivity of 8 × 10 4 V/W for a 50 × 50 µm 2 photoconductor at a temperature of 200K. The measured responsivity shows good agreement with the modelled responsivity across the midwave infrared window (3-5 µm). The measured responsivity is limited by surface recombination, which limits the effective lifetime to ≈ 15ns. The optical cut-off of the detector varies with temperature as modelled. There is strong agreement between modelled peak responsivity and measured peak responsivity with varying temperature from 80-300K.

show abstract

“…In order to overcome the narrow spectral bandwidth, varying the individual layer thickness was investigated. Heavens [3] proposes arithmetically and geometrically varying layer thicknesses in order to increase the bandwidth of Bragg reflectors created using a HgCdTe/CdTe material system. Design of the varying thickness mirrors is discussed in more detail elsewhere [4].…”

Section: Device Structure and Fabricationmentioning

confidence: 99%

Responsivity and Lifetime of Resonant-cavity-enhanced HgCdTe photodetectors

Wehner

Musca

Sewell

et al. 2006

2006 International Conference on Nanoscience and Nanotechnology

View full text Add to dashboard Cite

Resonant cavity enhanced HgCdTe structures using absorbers only 75nm thick have been grown by molecular beam epitaxy, and photoconductors have been modelled and fabricated based on these structures. Responsivity has been measured and shows a peak responsivity of 8 × 10 4 V/W for a 50 × 50 μm 2 photoconductor at a temperature of 200K. The measured responsivity shows good agreement with the modelled responsivity across the mid-wave infrared window (3-5μm). The measured responsivity is limited by surface recombination, which limits the effective lifetime to ≈ 15ns. The optical cut-off of the detector varies with temperature as modelled from 5.1 μm at 80K to 4.4 μm at 250K. There is strong agreement between modelled and measured peak responsivity as a function of temperature from 80-300K. The refractive index of CdTe used in the structures is investigated and is found to have a reduced refractive index.

show abstract

Staggered Broad-Band Reflecting Multilayers

Cited by 64 publications

References 6 publications

Responsivity and lifetime of resonant-cavity-enhanced HgCdTe detectors

Responsivity and lifetime of resonant-cavity-enhanced HgCdTe detectors

Responsivity and Lifetime of Resonant Cavity Enhanced HgCdTe Detectors

Responsivity and Lifetime of Resonant-cavity-enhanced HgCdTe photodetectors

Contact Info

Product

Resources

About