2D photoacoustic scanning imaging with a single pulsed laser diode excitation

2012 ◽  
Author(s):  
Xuegang Chen ◽  
Changwei Li ◽  
Lvming Zeng ◽  
Guodong Liu ◽  
Zhen Huang ◽  
...  
Keyword(s):  
Laser Diode ◽  
Pulsed Laser ◽  
Scanning Imaging

scholarly journals Pulsed Laser Diode-Based Desktop Photoacoustic Tomography for Monitoring Wash-In and Wash-Out of Dye in Rat Cortical Vasculature

10.3791/59764 ◽  
2019 ◽  
Author(s):  
Sandeep Kumar Kalva ◽  
Paul Kumar Upputuri ◽  
Praveenbalaji Rajendran ◽  
Rhonnie Austria Dienzo ◽  
Manojit Pramanik
Keyword(s):  
Laser Diode ◽  
Pulsed Laser ◽  
Photoacoustic Tomography

Study on time jitter and trigger synchronization characteristics of ns pulsed laser diode

2020 ◽  
Vol 49 (6) ◽  
pp. 20200147
Author(s):  
刘如军 Rujun Liu ◽  
马成 Cheng Ma ◽  
施卫 Wei Shi ◽  
惠兆宇 Zhaoyu Hui ◽  
杭玉桦 Yuhua Hang
Keyword(s):  
Laser Diode ◽  
Pulsed Laser ◽  
Time Jitter

Measuring the refractive index of water with a pulsed laser diode

2016 ◽  
Vol 37 (6) ◽  
pp. 062002
Author(s):  
Enrico Cataldo ◽  
Alberto Di Lieto ◽  
Francesco Maccarrone ◽  
Giampiero Paffuti
Keyword(s):  
Refractive Index ◽  
Laser Diode ◽  
Pulsed Laser

scholarly journals Charge-Line Dual-FET High-Repetition-Rate Pulsed Laser Driver

2019 ◽  
Vol 9 (7) ◽  
pp. 1289 ◽  
Author(s):  
Mateusz Żbik ◽  
Piotr Wieczorek
Keyword(s):  
Laser Diode ◽  
Repetition Rate ◽  
Field Effect Transistors ◽  
High Reliability ◽  
Pulsed Laser ◽  
High Repetition Rate ◽  
High Repetition ◽  
Laser Driver ◽  
Charge Line ◽  
Digital Circuitry

Most modern pulsed laser systems require versatile laser diode drivers. A state-of-the-art pulsed laser driver should provide precise peak power regulation, high repetition rate, and pulse duration control. A new, charge line dual-FET transistor circuit structure was developed to provide all these features. The pulsed modulation current is adjustable up to Imax = 1.2 A, with the laser diode forward voltage acceptable up to UF max = 20 V. The maximum repetition rate is limited by a charge line circuit to frep max = 20 MHz. Compared to the conventional single transistor drivers, the solution proposed in this paper allows a precise, high resolution width regulation to be obtained, whereas a low pulse jitter is ensured. In the solution, two separate, out-of-phase signals are used to trigger the individual Field Effect Transistors (FET). The resultant pulsed modulation current full-width-at-half-maxima (FWHM) is regulated from ~200 ps up to 2 ns. All control and timing signals are generated with a popular Field-Programmable Gate Array (FPGA) digital circuitry. The use of standard FPGA devices ensures the low cost and high reliability of the circuit, which are not available in laser drivers consisting of sophisticated analogue adjustable delay circuits.

A new design of pulsed laser diode driver system for multistate quantum key distribution

2011 ◽  
Vol 43 (5) ◽  
pp. 978-983
Author(s):  
M.S. Abdullah ◽  
M.Z. Jamaludin ◽  
G. Witjaksono ◽  
M.H.H. Mokhtar
Keyword(s):  
Laser Diode ◽  
Quantum Key Distribution ◽  
Pulsed Laser ◽  
Key Distribution

Pulsed laser diode device for measuring the concentration of carbon monoxide in the atmosphere over a long path

1982 ◽  
Vol 12 (3) ◽  
pp. 315-318 ◽  
Author(s):  
V I Astakhov ◽  
V V Galaktionov ◽  
I I Zasavitskiĭ ◽  
Yu V Kosichkin ◽  
A I Nadezhdinskiĭ ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Laser Diode ◽  
Pulsed Laser
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