摘要:

A thin‐film thermocouple detector, suitable for use with molecular lasers operating in the middle and far infrared has been developed. Measured response times are approximately 10−7sec. The noise equivalent power is of the order of 10−7W/Hz.

ISSN:0003-6951    

DOI:10.1063/1.1652616

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Results obtained from the study of the incremental conductance of metal to heavily dopedn‐type Si barrier tunneling as a function of bias voltage are presented. The Si is variously doped with P, As, and Sb. Experimental data indicate that the location of Fermi level is strongly dependent on dopant types.

ISSN:0003-6951    

DOI:10.1063/1.1652617

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

A diffusion anomaly of a native acceptor defect in ZnSexTe1−xp‐njunctions is described. The diffusivities of this defect inn‐ andp‐type crystals at 575°C have been determined. The anomaly can be utilized in a triple‐diffusion technique of preparingp‐njunction diodes with improved electrical properties.

ISSN:0003-6951    

DOI:10.1063/1.1652618

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

It has been found that ion implantation doping results in the generation and diffusion of defect species, forming deep trapping levels. The effect of these levels on the electrical characteristics of zinc‐implanted GaAs diodes has been observed for the case of 70‐kV implantation at 400°C into substrates withn‐type concentrations ranging from 1 × 1016to 1.8 × 1018atoms/cm3. Capacitance‐voltage measurements have indicated the presence of a semi‐insulating layer in the diodes, varying in thickness from 0.18 &mgr; for the most heavily doped substrate to 2.7 &mgr; for the lightest. Frequency dependence of the junction capacitance and power law variation of forward current vs voltage have also been observed and are attributed to deep levels.

ISSN:0003-6951    

DOI:10.1063/1.1652619

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Magnetic broadening of the iodine lasing line was found to increase the energy storage capability of the laser and thus increase the energy obtainable in aQ‐switched pulse from a few millijoules to a few tenths of a joule.

ISSN:0003-6951    

DOI:10.1063/1.1652620

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The buildup of the modes of a He&sngbnd;Ne laser in the presence of other strongly oscillating modes was analyzed. Owing to the gain interaction the buildup time was found to be about one order of magnitude greater than for freely growing modes and to be greatly dependent on the position of the modes under the Doppler curve. The active bandwidth for the low‐frequency noise due to the presence of combination tones near the modes was derived from these measurements.

ISSN:0003-6951    

DOI:10.1063/1.1652621

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

An approximate criterion for the self‐locking of three laser modes is developed from Lamb theory and tested against experiment.

ISSN:0003-6951    

DOI:10.1063/1.1652622

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

On the basis of high‐frequency modulation experiments and well‐known locking techniques, a scheme is described for stabilizing a visible laser frequency and simultaneously determining that frequency in terms of the time standard. The importance of this method for a refined determination of the velocity of light and the possibility of establishment of reference lines for spectroscopy and for length measurements, throughout the spectrum wherever laser lines are available, is discussed.

ISSN:0003-6951    

DOI:10.1063/1.1652623

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

We report several new high‐power stable modes of operation of the argon laser. These types of operation are characteristic of the laser itself; no mode‐selecting techniques are used. We have observed output powers of 2 W with up to 90% of the power in a single optical frequency, as well as several other new stable output spectra.

ISSN:0003-6951    

DOI:10.1063/1.1652624

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Echoes have been observed at microwave frequencies, resulting from electromagnetic field excitation of electric dipole transitions between inversion states in gaseous NH3. This paper reports preliminary observations made on a microwave echo spectrometer to be used to investigate homogeneous relaxation processes.

ISSN:0003-6951    

DOI:10.1063/1.1652625

出版商:AIP    

年代:1968

数据来源: AIP