Total Power Conversion Efficiency Research Articles

Efficient optically pumped InP and InxGa1−xAs lasers

Optically pumped InP and InxGa1−xAs are operated as pulsed room-temperature lasers with output power densities ≥ 105 W/cm2 and total power-conversion efficiencies of up to 4%.

Double-heterostructure GaAs : Si diode lasers

Double-heterostructure diode lasers with Si-doped active regions have exhibited laser action within the wavelength range 9100–9500 Å under pulsed room-temperature conditions. Threshold current densities are typically 4 × 103−1.1 × 104 A/cm2, and total power conversion efficiencies are ∼ 1–3%.