Radiation effects in optoelectronic devices

H. Lischka; P. Clemens; Henning Henschel; Otmar Koehn; W. Lennartz; Hans Ulrich Schmidt

doi:10.1117/12.198640

30 December 1994 Radiation effects in optoelectronic devices

H. Lischka, P. Clemens, Henning Henschel, Otmar Koehn, W. Lennartz, Hans Ulrich Schmidt

Proceedings Volume 2425, Optical Fibre Sensing and Systems in Nuclear Environments; (1994) https://doi.org/10.1117/12.198640
Event: Optical Fibre Sensing and Systems in Nuclear Environments, 1994, Mol, Belgium

Abstract

Active optoelectronic devices such as light emitting diodes (LEDs), laser diodes (LDs), photodiodes (PDs), and optocouplers (OCs) were evaluated for degradation under gamma, 14 MeV neutron, and flash X-ray irradiation. Dose rates, total dose values, and neutron fluences were chosen such that we get estimates of the behavior especially in space environments and nuclear engineering. The devices are designed for wavelengths from 660 to 1550 nm. LEDs showed a decrease of output power between 0.1 and 28 dB after a total gamma does of 10⁶ Gy or neutron fluences of 4 X 10¹⁴ cm^-2 (1 MeV), respectively. The threshold current of LDs shifted to higher values with increasing dose (⁶⁰Co) and neutron fluence. Irradiations of PDs with ⁶⁰Co gammas up to a total dose of 10⁶ Gy as well as irradiations with neutrons up to fluences of 4 X 10¹⁴ cm^-2 (1 MeV) lead to a strong increase of dark current. OCs show a significant reduction of the current transfer ratio at dose values between 10³ and 10⁴ Gy. Except two types, the optocouplers did not survive neutron fluences >= 8 X 10¹¹ cm^-2 (1 MeV).

Citation Download Citation

H. Lischka, P. Clemens, Henning Henschel, Otmar Koehn, W. Lennartz, and Hans Ulrich Schmidt "Radiation effects in optoelectronic devices", Proc. SPIE 2425, Optical Fibre Sensing and Systems in Nuclear Environments, (30 December 1994); https://doi.org/10.1117/12.198640

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