APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

SECTION LISTING

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

1 Mar 1967

Volume 10, Issue 5, pp. 139-170


LOW‐ENERGY ELECTRON DIFFRACTION OBSERVATIONS OF α‐ALUMINA

J. M. Charig

Appl. Phys. Lett. 10, 139 (1967); http://dx.doi.org/10.1063/1.1754883 (2 pages) | Cited 29 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Low‐energy electron diffraction observations of a single crystal of α‐alumina have revealed a reversible structural transformation on the (001) surface. The transformation is a function of the temperature of heat treatment of the alumina.

FILM PLANE HOLOGRAMS WITHOUT EXTERNAL SOURCE REFERENCE BEAMS

Lowell Rosen and William Clark

Appl. Phys. Lett. 10, 140 (1967); http://dx.doi.org/10.1063/1.1754884 (3 pages) | Cited 3 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Reasonable quality holograms have been made of objects placed within 1 to 3 cm of the hologram plane without the need for any external reference beam. The reconstructions from such holograms, though not of high quality, are clearly recognizable and three‐dimensional.

MULTIPLE QUANTUM RESONANCE SPECTROSCOPY THROUGH WEAKLY CONNECTED SUPERCONDUCTORS

A. H. Silver and J. E. Zimmerman

Appl. Phys. Lett. 10, 142 (1967); http://dx.doi.org/10.1063/1.1754885 (4 pages) | Cited 15 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Voltage‐biased superconducting weak contacts have been used as oscillating detectors to observe radio‐frequency absorption spectra including the Co59 nuclear magnetic resonance in ferromagnetic cobalt. The detection is attributed to multiple quantum processes and differentiation of the dynamic I‐V characteristics. Used as a spectrometer, the point contact is shown to be a continusously tunable ultra‐low power oscillator‐detector from 0 to 3 × 108 Hz. It is likely that the frequency limit could be extended to the superconducting gap frequency.

OPTICAL ANALOG OF THE TRANSIENT NUTATION EFFECT

C. L. Tang and H. Statz

Appl. Phys. Lett. 10, 145 (1967); http://dx.doi.org/10.1063/1.1754886 (3 pages) | Cited 17 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
The possibility of observing the optical transient nutation effect in CO2 lasers is considered. A formula for the nutation frequency is derived explicitly for the vibrational‐rotational transitions in molecules such as CO2.

ABSOLUTE FREQUENCY MEASUREMENT AND SPECTROSCOPY OF GAS LASER TRANSITIONS IN THE FAR INFRARED

L. O. Hocker, A. Javan, D. Ramachandra Rao, L. Frenkel, and T. Sullivan

Appl. Phys. Lett. 10, 147 (1967); http://dx.doi.org/10.1063/1.1754887 (3 pages) | Cited 46 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Absolute frequencies of the 311‐μ and the 337‐μ transitions of the CN gas laser are measured to within a few parts in 107. This is achieved by mixing the laser frequencies with high order harmonics of a microwave signal in a silicon diode. The beat frequencies of these two transitions which falls at 73.5 GHz is also measured directly. The Zeeman effect of these two laser transitions is studied. Based on a detailed analysis, it is found that the existing identification of these transitions is inconsistent with our observations.

ULTRASONIC IMAGING USING A SYNTHETIC HOLOGRAPHIC TECHNIQUE

K. Preston and J. L. Kreuzer

Appl. Phys. Lett. 10, 150 (1967); http://dx.doi.org/10.1063/1.1754888 (3 pages) | Cited 17 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Visible three‐dimensional ultrasonic imaging of the interior and exterior of optically opaque objects has been achieved using a synthetic holographic technique at a frequency of 5 MHz. One ultrasonic hologram and the corresponding visible image are presented.

OPTICAL HETERODYNE MEASUREMENT OF NEON LASER'S MILLIMETER WAVE DIFFERENCE FREQUENCY

J. L. Hall and W. W. Morey

Appl. Phys. Lett. 10, 152 (1967); http://dx.doi.org/10.1063/1.1754889 (4 pages) | Cited 6 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
We report detection and measurement of the millimeter wave difference frequency between two near laser lines at 1.152 μ. The two spectral transitions, separated by 2.26 Å, oscillate in pure neon in a single laser device, producing about 150 μW total power in several longitudinal modes. The many resulting 51.3‐kmc beat frequencies have been studied by optical heterodyne techniques. A type of diode has been found which has enough microwave sensitivity and enough optical sensitivity to combine the optical detector and the microwave heterodyne functions in a single element. The preliminary value for the difference in frequency between the and 2S4 → 2P7 transitions in neon at 150 mtorr is (51,360 ± 150) Mc. This value is not in agreement with the value calculated from Vol. I of Sitterly's Atomic Energy Levels (ref. 12).

PHOTOCONDUCTIVITY IN p‐TYPE SINGLE‐CRYSTAL PbS FILMS

John L. Davis, H. R. Riedl, and R. B. Schoolar

Appl. Phys. Lett. 10, 155 (1967); http://dx.doi.org/10.1063/1.1754890 (3 pages) | Cited 5 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Photoconductivity has been observed in p‐type single‐crystal films of PbS. The results suggest that the photoconductive mechanism in these films is the same as that in the highly sensitive p‐type polycrystalline PbS detectors.

COMPLEX STIMULATED RAMAN VIBRATIONAL‐ROTATIONAL SPECTRA IN HYDROGEN

F. M. Johnson, J. A. Duardo, and G. L. Clark

Appl. Phys. Lett. 10, 157 (1967); http://dx.doi.org/10.1063/1.1754891 (4 pages) | Cited 4 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Highly complex stimulated Raman scattering (SRS) spectra of hydrogen were produced by using narrow linewidth 1.058‐μ giant‐pulsed laser excitation. Results are presented which include the first reported observation of combination Raman lines whose frequencies are given by mvQ(1) + pvS(1) − vL where vQ(1), vS(1) and vL are the vibrational (4155 cm−1), rotational (587 cm−1) and laser frequency, respectively, m = 6, 7, or 9 and p = 0 or ±1. Numerous Raman lines described by the formula v = vL + mvQ(1) + nvS(0) + pvS(1), (m, n, p = 0, ±1, ±2,…), where vS(1) = 354 cm−1, were also observed.

LASER ACTION FROM TERBIUM TRIFLUOROACETYLACETONATE IN p‐DIOXANE AND ACETONITRILE AT ROOM TEMPERATURE

Sven Bjorklund, G. Kellermeyer, C. R. Hurt, N. McAvoy, and N. Filipescu

Appl. Phys. Lett. 10, 160 (1967); http://dx.doi.org/10.1063/1.1754892 (3 pages) | Cited 15 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Laser activity has been obtained from terbium tris (1, 1, 1‐trifluoroacetylacetonate) at room temperature in a liquid solution in acetonitrile and in p‐dioxane. Threshold pumping energy is about 1700 J. Characteristic line narrowing, spiking and beam collimation was exhibited.

DIELECTRIC AND ELECTRO‐OPTIC PROPERTIES OF LEAD MAGNESIUM NIOBATE

W. A. Bonner, E. F. Dearborn, J. E. Geusic, H. M. Marcos, and L. G. Van Uitert

Appl. Phys. Lett. 10, 163 (1967); http://dx.doi.org/10.1063/1.1754893 (3 pages) | Cited 28 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Low‐frequency dielectric constant measurements vs temperature and electric field indicate that the ferroelectric transition in Pb3MgNb2O9 is second order. The quadratic electro‐optic coefficients in Pb3MgNb2O9 are approximately an order of magnitude smaller than those of KTN (KTa.65Nb.35O3); however, the electronic conduction effects and compositional inhomogeneity problems encountered in KTN are absent in Pb3MgNb2O9, thus making it a practically useful electro‐optic material.

ELASTIC SURFACE WAVES IN QUARTZ AT 316 MHz

R. M. Arzt, E. Salzmann, and K. Dransfeld

Appl. Phys. Lett. 10, 165 (1967); http://dx.doi.org/10.1063/1.1754894 (3 pages) | Cited 17 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Elastic surface waves in quartz have been excited at 316 MHz by a method which seems also to be promising for even higher frequencies up to a few GHz. The temperature dependence of the absorption in quartz has been studied between 2°K and 300°K. When the quartz is immersed in liquid helium, an additional attenuation due to radiation on longitudinal waves into the fluid occurs which turns out to be noticeably higher than estimated.

THERMAL SWITCHING OF LASER EMISSION OF Er3+ AT 2.69 μ AND Tm3+ AT 1.86 μ IN MIXED CRYSTALS OF CaF2:ErF3:TmF3

M. Robinson and D. P. Devor

Appl. Phys. Lett. 10, 167 (1967); http://dx.doi.org/10.1063/1.1754895 (4 pages) | Cited 21 times

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Show Abstract
Pronounced temperature‐dependent transfer of excitation from the Er3+ laser pump levels to lower levels of Er3+ was observed in CaF2:ErF3 single crystals at ErF3 concentrations exceeding 12.5 wt %. Transfer of excitation from Er3+ to Tm3+ occurred when TmF3 was included as a second active constituent of the crystals. Stimulated emission of the 4I11∕2 → 4I13∕2 transition of Er3+ at 2.69 μ at 298°K resulted independently of Tm3+ and as a consequence of concentration quenching of emission of Er3+ from levels above 4I11∕2. At 100°K reduced transfer of excitation to 4I11∕2 of Er3+ occurred due to radiative emission from levels above 4I11∕2, and laser emission of Tm3+ was detected at 1.86 μ.
back to top
RSS Feeds
FREE

Erratum: Continuous Deflection of Laser Beams

E. G. H. Lean, C. F. Quate, and H. J. Shaw

Appl. Phys. Lett. 10, 170 (1967); http://dx.doi.org/10.1063/1.1754896 (1 page)

Online Publication Date: 30 November 2004

Full Text: | Download PDF

Abstract Unavailable
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close