High Voltage Picosecond Pulse Generation Utilizing Lasers PDF Download
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Author: R. Heintz
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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Book Description
A mod-locked Q-switched Nd:YAG laser is used to generate a train of light pulses of approximately 70 picoseconds duration. The energy in these laser pulses are of the order of 2 milli-joules. The train of pulses are then passed through a switchout so that a single pulse is selected. This single pulse then strikes a chromium doped GaAs semiconductor switch which then conducts. If a high voltage supply is connected to one end of the switch and a load is connected to the other end, then the load will observe an electrical pulse which is half the amplitude of the d.c. voltage and of the order of 100-200 picosecond duration. The width of the electrical pulse is determined by the width of the laser pulse and of the characteristics of the transmission line over which the GaAs is mounted. (Author).
Author: R. Heintz
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
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Book Description
A mod-locked Q-switched Nd:YAG laser is used to generate a train of light pulses of approximately 70 picoseconds duration. The energy in these laser pulses are of the order of 2 milli-joules. The train of pulses are then passed through a switchout so that a single pulse is selected. This single pulse then strikes a chromium doped GaAs semiconductor switch which then conducts. If a high voltage supply is connected to one end of the switch and a load is connected to the other end, then the load will observe an electrical pulse which is half the amplitude of the d.c. voltage and of the order of 100-200 picosecond duration. The width of the electrical pulse is determined by the width of the laser pulse and of the characteristics of the transmission line over which the GaAs is mounted. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 568
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Book Description
Author: Bryan Royce Olsen
Publisher:
ISBN:
Category : Laser-plasma interactions
Languages : en
Pages : 178
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Book Description
Author: G. J. Aspin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: V. V. Apollonov
Publisher: Springer
ISBN: 3319333593
Category : Science
Languages : en
Pages : 445
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Book Description
This book displays the physics and design of high-power molecular lasers. The lasers described are self-controlled volume-discharge lasers. The book explains self-sustained discharge lasers, self-initiated discharge lasers and technical approaches to laser design. Important topics discussed are laser efficiency, laser beam quality and electric field homogeneity. The book contains many new innovative applications.
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1420
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 486
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Book Description
Author: P.J. Rolls
Publisher: Springer Science & Business Media
ISBN: 1461333776
Category : Science
Languages : en
Pages : 655
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Book Description
The combination of color schlieren with high speed flash techniques has proved to be a valuable tool for investigating high speed transient events. Fully two dimensional refractive index information can be ob tained. The resolution on 35 mm film was sharp enough to allow 50 cm by 75 cm color enlargements. REFERENCES 1. Barnes, N.F., Jour. of the SMPTE, Oct. 1953, Vol. 61,487-511. 2. Cords, P.R., S.P.I.E. Jour., February-March 1968, Vol. 6. 3. North, R.J., NPL/Aero/266, 1954. 4. Settles, G.S., Image Technology, June-July 1972. 5. Smith, L.L., and J.R. Waddell, 9th Congress of Righ Speed Photogra phy, Denver, Colo., August 1970, Paper 86. 6. Stong, C.L., and G.S. Settles, Scientific American, May 1971, Vol. 225, No.5. 7. Stong, C.L., and Vandiver, J.K., Scientific American, August 1974, Vol. 231, No.2. ,105 DISCUSSION MY' R J North, (UK): Pould the author care to comment on possible ambiguities of interpretation due to the omnidirectional sensitivity of the colour filter system used? I notice that in two of his pic tures density gradients in directions at right angles are shown by the same colour transitions. MY' J Kim Vandiver: The photographs presented were not composed to yield accurate determination of the direction of density gradients.
Author: Sheng-Hui Yang
Publisher:
ISBN:
Category : Diodes, Switching
Languages : en
Pages : 430
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Book Description
Author: Sina Riecke
Publisher: Cuvillier Verlag
ISBN: 3736936524
Category : Science
Languages : en
Pages : 136
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Book Description
Picosecond laser pulses find diverse applications for example in material processing as well as in analysis and sensing. Fluorescence lifetime spectroscopy in particular requires pulses with variable repetition rate and moderate pulse energy. While suitable pulses in the red and blue spectral range can be provided by gain-switched laser diodes, the generation of green laser pulses requires a more elaborate setup based on second harmonic generation. The starting point is a gain-switched infrared distributed-feedback laser diode. The optimization of the laser design and the operating conditions allows to generate spectrally narrow picosecond pulses with a peak power above 1 W. Different gain media are compared for further amplification of these pulses, and options for the miniaturization of the master-oscillator power-amplifier system are explored. The resulting intense infrared pulses are then used for second harmonic generation of green picoseconds pulses. Their peak power of above 5 W exceeds all previous green pulse sources with variable repetition rate. In terms of pulse energy and background suppression, the reported green pulses are thus ideally suited for fluorescence lifetime spectroscopy
