The effects of radiation damage on modern electronic and optoelectronic is discussed. Ionization damage causes degradation in transistors and integrated circuits, and there are new effects -including enhanced damage at low dose rate -that have to be considered when devices are tested and qualified for space use. For optoelectronic devices displacement damage is usually the main concern. Some ty...

Contamination and materials degradation are among the highest risks associated with the deployment of high intensity solid-state laser systems. Although high intensity laser induced optical damage has been studied for decades, the field is still in its infancy. There is little concrete information concerning the relationship of contamination and laser induced optical damage. Further, little inf...

Fully packaged InGaAs p-i-n photodiodes for use in CMS Tracker optical digital timing and control links have been irradiated at room temperature with 330MeV positive pions. Measurements of the leakage current and photocurrent response were made in-situ for pion fluences up to 3.9x10π/cm. The leakage current increases from <1nA to 40μA at 5V reverse bias and the photocurrent for 100μW incident o...

high intensity optical radiation can cause damage to the eye and intense radiation in the range of 770-1400 nm can cause thermal retinal damage. in the workplaces where there are high temperature sources, the workers in front of these hot  sources without bright light maybe exposed to the  intense ir radiation, thus regular measurement of these radiations seems crucial. measurement of ir radiat...

Laser damage thresholds at 248nm of TiO,, ZrO, and HfO, thin films of h optical thickness on SQ1 quartz glass substrates are determined by the photoacoustic mirage technique. Damage thresholds correlate with the band gap energy of these materials, as determined by optical spectroscopy. It is demonstrated that the damage resistance can be raised by an additional h/2 SiO, overlayer. Damage thresh...

As continuous health monitoring of aircraft components will provide substantial time and cost savings to the aircraft industry, the use of an integrated sensing technology with autonomous damage assessment is looked for. This study is part of the 6 STREP framework AISHA project, investigating the use of ultrasonic Lamb wave technology for the fast inspection of large shell structures. For the d...

LLE Review, Volume 73 45 In cold processing of optical glasses by microgrinding,1,2 the resulting brittle-material-removal rate induces a cracked layer near the glass surface, referred to as subsurface damage (SSD). [Editor’s note: The acronym for subsurface damage (SSD) used in this article should not be confused with its more common use as an acronym for smoothing by spectral dispersion.] In ...