The design and implementation of photoacoustic based laser warning receiver for harsh environments

El-Sherif, Ashraf F.; Ayoub, H. S.; El-Sharkawy, Yasser H.; Gomaa, Walid; Hassan, H. H.

doi:10.1016/j.optlastec.2017.06.030

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…Optical sensors offer nonintrusive and nondestructive measurements which would not influence the flow state during the measurement process. Recently, laser spectroscopy has been applied to fluid measurement with the advantages of fast response, high sensitivity and low maintenance [12].…”

Section: Imentioning

confidence: 99%

See 1 more Smart Citation

Measurement of the void fraction of gas-liquid two-phase CO<inf>2</inf> flow using laser attenuation techniques

Duan

Wang

et al. 2018

2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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Section: Imentioning

confidence: 99%

“…Laser intensity attenuation is a predominant method for gas-liquid two-phase flow measurement due to its simple principle [11,12]. A laser source is placed on one side of the observation window and a detector on the other side to detect the optical intensity.…”

Section: A Laser Attenuation Detectionmentioning

confidence: 99%

Measurement of the void fraction of gas-liquid two-phase CO<inf>2</inf> flow using laser attenuation techniques

Duan

Wang

et al. 2018

2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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“…The LWS must be able to detect the real laser threat radiation and not interfere with the background radiations and noises. To avoid this problem, the use of methods, such as optical interferometers 28 , 29 and photoacoustic design, 30 is suggested.…”

Section: Introductionmentioning

confidence: 99%

Analysis of structures and technologies of various types of photodetectors used in laser warning systems: a review

Mohammadnejad,

Aasi

2023

Opt. Eng.

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With the advancement of laser technology in recent decades, this device has been used in a wide range of applications, such as medical sciences, military, industry, holography, spectroscopy, and astronomy. In past years, military operations for better communication depended on radiofrequency. Vulnerability to security threats and exposure to electromagnetic interference were the main problems of this electromagnetic spectrum region. Therefore, attention was drawn to the visible and infrared (IR) regions. This spectrum provided a secure transfer of the data. The probability of intercepting a laser signal is very low due to the divergence of the narrow beam and the coherence of its optical beam. Hence, it has made this device a good candidate for secure military operations. As a result, the laser based-devices and laser-guided weapons (LGW), such as laser target designator and beam riders, have become an undeniable tool on battlefields. Reduction of the vulnerability to the LGW threats by providing laser detection, angle of arrival, wavelength discrimination, and temporal characterization is the main intention of the laser warning system (LWS). This system consists of three major subsystems. The optical subsystem will consist of spectral filters, focusing lenses, and the detection one, which is made of a few detectors in a unique array's configuration [especially IR photodetector (IRPD)], and the processing subsystem. In the last decades, with the progress made in nanofabrication and nanotechnology, consequential research has been done to enhance the performance of IRPDs, such as increasing the production yield, making it simple in the fabrication processes, lowering the fabrication cost, and increasing the operating temperature. This review paper gives a particular concentration to the photodetectors used in the detection subsystem of LWSs. In addition, some nanostructures have been surveyed to enhance the optical coupling and light-matter interaction of IRPD. Also, all studied structures are compared in a table. Finally, the detection subsystem we simulated and built at the Nanoptronics Research Center will be analyzed.

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“…LWS can detect and decode the laser signals from the LGW, and then guide the defense facility to emit counter laser or smoke. To make optimal use of LWS, it should always be monitoring state until detecting coded lasers and process laser signals in quite a short time [3] .…”

Section: Introductionmentioning

confidence: 99%

Generation and acquisition system for pulse-interval coded laser based on LabVIEW

Shao

et al. 2022

5th Optics Young Scientist Summit (OYSS 2022)

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This paper presents an integrated system for generating and collecting pulse-interval coded laser effectively. The system realize the generation of coded laser with either fixed-frequency or 3-10 bits pulse-intervals, the coded laser is collected and processed by our system using the memory segment technique. The whole system is highly intelligent based on LabVIEW software and potential for laser guided weapons and laser warning systems.

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The design and implementation of photoacoustic based laser warning receiver for harsh environments

Cited by 11 publications

References 12 publications

Measurement of the void fraction of gas-liquid two-phase CO<inf>2</inf> flow using laser attenuation techniques

Measurement of the void fraction of gas-liquid two-phase CO<inf>2</inf> flow using laser attenuation techniques

Analysis of structures and technologies of various types of photodetectors used in laser warning systems: a review

Generation and acquisition system for pulse-interval coded laser based on LabVIEW

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