Radiometric characterization of normal-incidence InAs/In0.15Ga0.85As quantum-dot detectors

Sanjay Krishna; Sunil Raghavan; Andreas Stintz; Christian P. Morath; Hillary E. Norton; Dang T. Le; David A. Cardimona; Stephen W. Kennerly

doi:10.1117/12.453504

11 November 2002 Radiometric characterization of normal-incidence InAs/In_0.15Ga_0.85As quantum-dot detectors

Sanjay Krishna, Sunil Raghavan, Andreas Stintz, Christian P. Morath, Hillary E. Norton, Dang T. Le, David A. Cardimona, Stephen W. Kennerly

Author Affiliations +

Proceedings Volume 4823, Photonics for Space Environments VIII; (2002) https://doi.org/10.1117/12.453504
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Normal incidence InAs/In_0.15Ga_0.85As dots-in-a-well detectors operating at T=78K with λ_cut-off ~8.2 μm and a spectral width (Δλ/λ) of 35% are reported. The peak at 7.2 μm is attributed to the bound-to-bound transitions between the ground state of the dot and the states within the InGaAs well. A broad shoulder around 5 μm, which is attributed to the bound to continuum transition, is also observed. Calibrated blackbody measurements at a device temperature of 78K yield a peak responsivity of 3.58 A/W (V_b=-1V), peak detectivity= 2.7x10⁹cmHz^1/2/W (V_b=-0.3V), conversion efficiency of 57% and a gain ~25.

Citation Download Citation

Sanjay Krishna, Sunil Raghavan, Andreas Stintz, Christian P. Morath, Hillary E. Norton, Dang T. Le, David A. Cardimona, and Stephen W. Kennerly "Radiometric characterization of normal-incidence InAs/In_0.15Ga_0.85As quantum-dot detectors", Proc. SPIE 4823, Photonics for Space Environments VIII, (11 November 2002); https://doi.org/10.1117/12.453504

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available