1. |
Surface‐wave acoustoelectric image scanner |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 415-416
S. Takada,
H. Hayakawa,
N. Mikoshiba,
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摘要:
An optical image scanning method using the longitudinal acoustoelectric effect by surface waves in the coupledp‐Si/LiNbO3system is described. By means of the coupling between electrons in a weak inversion layer and surface waves (frequency, 87 MHz; time duration, 400 nsec), a resolution of 2 lines/mm can be obtained.
ISSN:0003-6951
DOI:10.1063/1.1654941
出版商:AIP
年代:1973
数据来源: AIP
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2. |
Acousto‐optic diffraction of guided optical waves in LiNbO3 |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 417-419
R. V. Schmidt,
I. P. Kaminow,
J. R. Carruthers,
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摘要:
We report acousto‐optic diffraction modulation of a guided optical wave in LiNbO3by an acoustic surface wave. 250 mW of acoustic power produces 100% modulation of the zero‐order beam.
ISSN:0003-6951
DOI:10.1063/1.1654942
出版商:AIP
年代:1973
数据来源: AIP
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3. |
Picosecond framing photography of a laser‐produced plasma |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 420-422
M. C. Richardson,
K. Sala,
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摘要:
Sequential two‐dimensional photographs of a laser‐produced plasma in air with effective individual exposure times of [inverted lazy s] 5 psec have been obtained by utilizing a focal‐plane optical Kerr effect shutter.
ISSN:0003-6951
DOI:10.1063/1.1654943
出版商:AIP
年代:1973
数据来源: AIP
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4. |
Electron beam concentration enhanced by a laser‐produced plasma |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 423-425
P. A. Miller,
J. Chang,
G. W. Kuswa,
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摘要:
A new technique has been developed for the production of tightly focused intense relativistic electron beams. A collimated plume of laser blowoff plasma is injected on axis into the anode‐cathode gap region of a low‐impedance diode prior to the beam pulse. The electron beam is found to pinch in the diode to current densities ≥ 2 MA/cm2.
ISSN:0003-6951
DOI:10.1063/1.1654944
出版商:AIP
年代:1973
数据来源: AIP
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5. |
Limiting currents in unneutralized relativistic electron beams |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 426-428
J. A. Nation,
M. Read,
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摘要:
The space‐charge depression of the potential within an unneutralized relativistic electron beam limits the beam current. Calculations of this effect are presented for an annular beam and compared to experiment.
ISSN:0003-6951
DOI:10.1063/1.1654945
出版商:AIP
年代:1973
数据来源: AIP
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6. |
X radiation from high‐energy‐density exploded‐wire discharges |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 429-430
D. Mosher,
S. J. Stephanakis,
I. M. Vitkovitsky,
C. M. Dozier,
L. S. Levine,
D. J. Nagel,
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摘要:
Exploded‐wire discharges of tungsten and titanium driven by a high‐power pulse generator have been used to produce intense x‐ray continuum and line radiation. A calibrated LiF crystal spectrograph recorded the radiation spectrum in the 3‐ to 25‐keV range. More than 20 J of x radiation are emitted in this photon energy band by tungsten plasmas in less than 50 nsec. The source of emission is less than 1 mm in diameter and about 3.5 cm long.
ISSN:0003-6951
DOI:10.1063/1.1654946
出版商:AIP
年代:1973
数据来源: AIP
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7. |
Origin of the holding current in threshold switching devices |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 431-433
Laurence P. Flora,
David Adler,
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摘要:
It is shown that the holding current in threshold switching devices is a consequence of the time rate of recovery of threshold voltage taken together with the device capacitance. The application of these considerations to recent double‐pulse experiments is also discussed.
ISSN:0003-6951
DOI:10.1063/1.1654947
出版商:AIP
年代:1973
数据来源: AIP
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8. |
HF chemical lasing at higher vibrational levels |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 434-436
S. W. Mayer,
D. Taylor,
M. A. Kwok,
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摘要:
HF lasing has been obtained from theP6(5) andP6(4) transitions as well as severalP5andP4transitions of HF. Lasing from these high vibrational levels was produced by transverse pulsed discharges in mixtures of HI, He, and SF6or SO2F2. The low bond energy of HI contributed to doubling the energy of laser pulses compared to the energy observed when H2was substituted for HI. The HF laser frequencies were also measured for other fuels with low RH bond energies.
ISSN:0003-6951
DOI:10.1063/1.1654948
出版商:AIP
年代:1973
数据来源: AIP
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9. |
Optical storage in VO2films |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 437-438
A. W. Smith,
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摘要:
The use of VO2films for direct‐bit optical storage with near‐infrared lasers is demonstrated. The VO2response is fast (< 10 ns), and large read signals are obtained with unpolarized light. A writing threshold of 0.03 nJ/&mgr;m2is observed.
ISSN:0003-6951
DOI:10.1063/1.1654949
出版商:AIP
年代:1973
数据来源: AIP
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10. |
Electro‐optic properties of reverse‐biased GaAs epitaxial thin films at 10.6 &mgr;m |
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Applied Physics Letters,
Volume 23,
Issue 8,
1973,
Page 439-441
P. K. Cheo,
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摘要:
Measurements of the electro‐optic properties of high‐resistivity GaAs epitaxial thin films have been made at the 10.6‐&mgr;m CO2laser wavelength by a novel rf interferometric technique. The described technique affords very accurate and convenient measurements of the phase shift of a 10.6‐&mgr;m guided wave mode in thin films as a function of reverse‐biased junction voltage. The measured electro‐optic coefficient for thin films is found to be in good agreement with conventional measurements,r41= 1.2 × 10−10cm/V at 10 &mgr;m, for bulk GaAs electro‐optic crystals.
ISSN:0003-6951
DOI:10.1063/1.1654950
出版商:AIP
年代:1973
数据来源: AIP
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