Interrelations between advanced processing techniques, integrated circuits, materials development and analysis

Interrelations between advanced processing techniques, integrated circuits, laser radiation, and microcircuit interconnection

The procurement and evaluation of a prototype laser satellite-tracking system Final report, 1 Jan. 1967 - 30 Sep. 1968

Pulsed ruby laser satellite tracking syste

Application of electron and laser beams to spacecraft electronic joining

Survey of electron beam and laser techniques applicable to spacecraft joinin

An Historical Survey on Light Technologies

Following the celebration of the International Year of Light and Light-based Technologies in 2015, this paper presents a survey of the exploitation of light throughout our history. Human beings started using light far into the Stone Age, in order to meet immediate needs, and widened its used when ancient civilizations developed. Other practical uses were conceived during the Middle Ages, some of which had a deep impact on social life. Nevertheless, it was after the Scientific Revolution and, to a wider extent, with the Industrial Revolution, that more devices were developed. The advancement of chemistry and electricity provided the ground and the tools for inventing a number of light-related devices, from photography to chemical and electrical lighting technologies. The deeper and broader scientific advancements of the twentieth century, throughout wave and quanta paradigms and the research on the interactions with matter at the sub-atomic level, have provided the knowledge for a much broader exploitation of light in several different fields, leading to the present technological domains of optoelectronics and photoelectronics, including cinema, image processing, lasers, photovoltaic cells, and optical discs. The recent success of fiber optics, white LEDs, and holography, evidence how vastly and deeply the interaction between light and man is still growing

Laser Technology Applications in Critical Sectors: Military and Medical

This study aims to observe laser technology applications in two critical sectors which are military and medical. These two crucial sectors required a technology that compatible with the nature of the field; safe, precise and fast (time –saving). A laser is defined as a device that emits a focused beam of light by stimulating the emission of electromagnetic radiation. The characteristics of lasers; coherence, directionality, monochromatic and high intensity are very suitable to be used in the critical sectors. In the military sector, the implementation of laser is commonly used in various types of weapons manufacturing. In this paper, three different military weapon systems namely weapon simulator, laser anti-missile system and navy ship laser weapon system were studied. Meanwhile, in the medical sector, the laser is widely implementing in medical equipment especially in dentistry, surgery and skin treatment. The capability of laser technology to be adapted in the critical sectors can be further investigated and enhanced for future discovery

Volume 76 - Issue 8 - May, 1965

https://scholar.rose-hulman.edu/technic/1022/thumbnail.jp

Development and characterized of microcontroller based xenon flashlamp driver circuit

Optical pumping using flashlamp is the preferred technique in solid state laser. Xenon flashlamp is a device that emits large amount of spectral energy in short duration pulses. Xenon is generally chosen because it yields a higher radiation output (40% -60%) for a given electrical energy than other noble gases. Triggering a flashlamp generally requires very high voltage pulse of a short duration. The objective of this project is to develop a programmable xenon flashlamp driver. Current set-up allows flashlamp to be triggered in a single mode. A fundamental study was carried out by varying the input energy from 4.48 J to 26.88 J across the flashlamp. The heart of the flashlamp driver is a PIC16F84A microcontroller that runs on a +5 V supply and clocked by a 4 MHz resonator. This microcontroller was connected to a personal computer, via serial port, acting as remote terminal. Initially, a TTL pulse output from PIC16F84A was sent out to drive a SCR. The SCR step-upped the TTL pulse to 332 ±5 volts pulse. Finally, a 1:2 transformer mixes the resulting 740 ±10 volt pulse with 2 ±0.01 kV DC voltage. The resulting voltage waveform is applied across a xenon flashlamp. Xenon gas ionizes for a brief period determined by the pulse width. This results in an electrical short circuit across the flashlamp’s electrodes. A large amount of current is drawn across the electrodes. This causes a rapid increase in the current flow through the flashlamp and initiates the desired arc lamp discharges. A Rogowski coil was used to detect the pulse current waveform. Xenon flashlamp output was detected using IPL10050 photodiode. An OPHIR BeamStar CCD Laser Beam Profiler was employed to record a plasma spectral gradient. The peak pulse current was obtained in the range of 776 A – 982 A. The bandwidth and the amplitude of the xenon flashlamp pulse were found in good agreement with the input energy. The beam profiles and dimensions of the plasma were dependent upon input energy

Clear air turbulence

Research on forecasting, detection, and incidents of clear air turbulenc

Unclassified information list, 12-16 September 1966

Book and document information list - astrophysics, atmospherics, biology, nuclear physics, missile technology, navigation, electronics, chemistry, materials, mathematics, and other topic