Red–green–blue generation from a lone dual-wavelength GdAl3(BO3)4:Nd3+ laser
We demonstrate the simultaneous generation of the three basal red–green–blue colors from a lone GdAl3(BO3)4:Nd3+ bi-functional laser and optical nonlinear crystal. The laser works in a dual-...
We demonstrate the simultaneous generation of the three basal red–green–blue colors from a lone GdAl3(BO3)4:Nd3+ bi-functional laser and optical nonlinear crystal. The laser works in a dual-...
Surface-topography-induced enhanced transmission and directivity of microwave radiation through a subwavelength circular metal aperture
Strongly enhanced transmission of microwave radiation (0~5 mm) is observed through a single subwavelength circular aperture of diameter d = 2.5 mm in a metallic plate. The phenom...
Strongly enhanced transmission of microwave radiation (0~5 mm) is observed through a single subwavelength circular aperture of diameter d = 2.5 mm in a metallic plate. The phenom...
Ammonium sulfide passivation of Type-II InAs/GaSb superlattice photodiodes
Appl. Phys. Lett. 84, 2037 (2004); doi:10.1063/1.1686894
Issue Date: 22 March 2004
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We report on the surface passivation of Type-II InAs/GaSb superlattice photodetectors using various ammonium sulfide solutions. Compared to unpassivated detectors, zero-bias resistance of treated 400 µm×400 µm devices with 8 µm cutoff wavelength was improved by over an order of magnitude to ~20 k
at 80 K. Reverse-bias dark current density was reduced by approximately two orders of magnitude to less than 10 mA/cm2 at –2 V. Dark current modeling, which takes into account trap-assisted tunneling, indicates greater than 70 times reduction in bulk trap density for passivated detectors. ©2004 American Institute of Physics.
at 80 K. Reverse-bias dark current density was reduced by approximately two orders of magnitude to less than 10 mA/cm2 at –2 V. Dark current modeling, which takes into account trap-assisted tunneling, indicates greater than 70 times reduction in bulk trap density for passivated detectors. ©2004 American Institute of Physics.
| History: | Received 27 October 2003; accepted 22 January 2004 |
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http://link.aip.org/link/?APPLAB/84/2037/1 |
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