Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Auger Recombination Coefficients in Type-I Mid-Infrared InGaAsSb Quantum
  Well Lasers   From a systematic study of the threshold current density as a function of
temperature and hydrostatic pressure, in conjunction with theoretical analysis
of the gain and threshold carrier density, we have determined the wavelength
dependence of the Auger recombination coefficients in InGaAsSb/GaSb quantum
well lasers emitting in the 1.7-3.2 $\mu$m wavelength range. From hydrostatic
pressure measurements, the non-radiative component of threshold currents for
individual lasers was determined continuously as a function of wavelength. The
results are analysed to determine the Auger coefficients quantitatively. This
procedure involves calculating the threshold carrier density based on device
properties, optical losses, and estimated Auger contribution to the total
threshold current density. We observe a minimum in the Auger rate around 2.1
$\mu$m. A strong increase with decreasing mid-infrared wavelength (< 2 $\mu$m)
indicates the prominent role of inter-valence Auger transitions to the
split-off hole band (CHSH process). Above 2 $\mu$m, the increase with
wavelength is approximately exponential due to CHCC or CHLH Auger
recombination, limiting long wavelength operation. The observed dependence is
consistent with that derived by analysing literature values of lasing
thresholds for type-I InGaAsSb quantum well diodes. Over the wavelength range
considered, the Auger coefficient varies from a minimum of $\leq$ 1x10$
^{16}$cm$^{4}$s$^{-1}$ at 2.1 $\mu$m to ~8x10$^{16}$cm$^{4}$s$^{-1}$ at 3.2
$\mu$m.

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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: supr-con