An underwater chaotic lidar sensor based on synchronized blue laser diodes

Rumbaugh, Luke K.; Dunn, Kaitlin J.; Bollt, Erik M.; Cochenour, Brandon; Jemison, William D.

doi:10.1117/12.2224498

Cited by 12 publications

(7 citation statements)

References 16 publications

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“…The correlation characteristics of chaotic lasers have been widely used in radar applications. Rumbaugh proposed a chaotic lidar transmitter based on an ultra-long cavity fiber laser for underwater ranging and imaging applications 35 . Ning Jiang proposed a pulsed chaotic multiple input multiple output radar system to achieve centimeter-level resolution for multi-target ranging 36 .…”

Section: Introductionmentioning

confidence: 99%

Reflective optical imaging for scattering medium using chaotic laser

Feng,

Yang,

et al. 2024

J. Biomed. Opt.

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Optical imaging is a non-invasive imaging technology that utilizes near-infrared light, allows for the image reconstruction of optical properties like diffuse and absorption coefficients within the tissue. A recent trend is to use signal processing techniques or new light sources and expanding its application.Aim: We aim to develop the reflective optical imaging using the chaotic correlation technology with chaotic laser and optimize the quality and spatial resolution of reflective optical imaging.Approach: Scattering medium was measured using reflective configuration in different inhomogeneous regions to evaluate the performance of the imaging system. The accuracy of the recovered optical properties was investigated. The reconstruction errors of absorption coefficients and geometric centers were analyzed, and the feature metrics of the reconstructed images were evaluated. Results:We showed how chaotic correlation technology can be utilized for information extraction and image reconstruction. This means that a higher signal-tonoise ratio and image reconstruction of inhomogeneous phantoms under different scenarios successfully were achieved.Conclusions: This work highlights that the peak values of correlation of chaotic exhibit smaller reconstruction error and better reconstruction performance in optical imaging compared with reflective optical imaging with the continuous wave laser.

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Section: Introductionmentioning

confidence: 99%

Reflective optical imaging for scattering medium using chaotic laser

Feng,

Yang,

et al. 2024

J. Biomed. Opt.

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“…Advancement of surveying and scanning technologies has improved the process of gaining required information and underwater images. These technologies are used for imaging, topological mapping (bathymetrical) range finding, dredging and water property sensing in a variety of fields as has been listed earlier by Rumbaugh et al, [3].…”

Section: Introductionmentioning

confidence: 99%

Advancement of Underwater Surveying and Scanning Techniques: A Review

Wan Hafiza,

Mahfuzah Md Shukor,

Faezah Jasman

et al. 2024

ARASET

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Underwater scanning and surveying (USS) play a significant role in tactical surveillance, offshore explorations, climate change monitoring, and oceanography research. USS are required to accurately obtain the 3-D geometry information of an underwater object and determine the underwater area of interest respectively. This paper reviews the state-of-the-art USS by discussing the operations, characters, advantages and disadvantages of the sensors used in each of the techniques. The paper classifies the sensors based on the carrier signals which are acoustics and optical signals. The hybrid technique is then proposed by integrating acoustics and optical approaches for the scanning technology and utilizing artificial intelligence and OWC technologies to improve the system’s accuracy and latency. The structured review of these techniques will give insight into the future advancement of USS and improve its quality of service.

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“…III-nitride semiconductors have a bright future in laser diode (LDs) with a wide emission wavelength raging from ultraviolet to infrared and a high luminous efficiency [1][2][3]. However, all commercial GaN-based LDs are operated in multiple longitudinal modes, which cannot meet the demands of narrow linewidth, high coherence and accurate wavelength tuning for the emerging applications in the underwater LiDAR, holographic storage, atom cooling and atom clocks [4][5][6][7][8][9][10]. Furthermore, using Si substrate to grow GaN-based LDs can greatly slash the cost due to a larger wafer size and lower material cost of Si substrates as compared with free-standing GaN substrates, and the potential adoption of large-scale, low-cost manufacturing foundries.…”

Section: Introductionmentioning

confidence: 99%

GaN-based distributed feedback laser diodes grown on Si

Tang¹,

Feng²,

Liu³

et al. 2022

J. Phys. D: Appl. Phys.

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This letter reports room-temperature electrically injected GaN-based distributed feedback laser diodes grown on Si. A hundred pairs of high-order gratings were prepared by dry-etching along the ridge to select only single mode, and tetramethyl ammonium hydroxide polishing technology was adopted to remove the etching damage and make the sidewall smooth and steep. As a result, we have successfully fabricated GaN-based distributed feedback laser diodes grown on Si with a side-mode suppression ratio of ~10 dB. Further analysis revealed that the fabrication of gratings reduced the injection efficiency and increased the optical loss, which deteriorated the device performance. Further improvements of the laser material quality and device fabrication are underway.

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An underwater chaotic lidar sensor based on synchronized blue laser diodes

Cited by 12 publications

References 16 publications

Reflective optical imaging for scattering medium using chaotic laser

Reflective optical imaging for scattering medium using chaotic laser

Advancement of Underwater Surveying and Scanning Techniques: A Review

GaN-based distributed feedback laser diodes grown on Si

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