Effects of 2 MeV proton irradiation on operating wavelength and leakage current of vertical cavity surface emitting lasers

Radiation-Resistant CsPbBr3 Nanoplate-Based Lasers

“…To have a general understanding of the influence of proton irradiation on the CsPbBr 3 nanoscale laser, we conducted the optical characterization of the same CsPbBr 3 NP after irradiation by 150 keV protons with a beam fluence of 1 × 10 15 p/cm 2 under which the III–V-based lasers hardly survive. − ,, Surprisingly, the incident fluence-dependent emission spectra (Figure d) and the corresponding normalized spectral color map (inset of Figure d) confirmed the lasing oscillation of the CsPbBr 3 NP after exposure to proton irradiation at an extremely high level of the collision that destroys the CdS NPs. Besides, the CsPbBr 3 NP exhibits stable optical properties, and its lasing threshold (from 13.44 to 14.14 μJ/cm 2 ) and lasing peak (from 537.8 to 537.1 nm) only slightly shifted compared with those before proton irradiation.…”

Annealing effects of 850 nm vertical-cavity surface-emitting lasers after proton irradiation

“…Under the condition of high-injection annealing, the threshold current fails to recover completely owing to the unrecoverable defects that require carrier input compensation. The effect of these defects on the slope efficiency negligible at low currents owing to the recovery of most of the defects in the quantum well and their negligible influence on the overall reflectivity of the upper and lower reflective layers [ 22 ]. In addition, the data points obtained in the form of a pulse current minimized the influence of temperature.…”

Effect of 60Co-gamma radiation on the random walk error of interferometric fiber optic gyroscopes

“…Moreover, the other components' parameters have no obvious effects on RWC of FOG. The mean wavelength of the source output changes about 500 ppm after radiation, and there also has literature reporting the radiation induced output mean wavelength variation for laser diodes and light emission diodes [11,12]. This 500 ppm variation can observably influence the scale factor in IFOG.…”