摘要:

The polarization intensitiesIxandIyof a single‐mode linear laser are measured as a function of the transverse magnetic fieldBxandBy. The experimental data are in excellent agreement with the recent analysis of Sargent, Lamb, and Fork.

ISSN:0003-6951    

DOI:10.1063/1.1651849

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

We show, using the concept of the polarization potential tensor &bgr; which relates energy band shifts to the crystal polarization, that the nonlinear optical (NLO) tensor coefficients &dgr; in oxygen‐octahedra ferroelectrics are proportional to the quantity &bgr;PswherePsis the crystal spontaneous polarization. Because &bgr; is found to be nearly the same in all oxygen‐octahedra ferroelectrics, we are able to calculate the &dgr; coefficients from a knowledge ofPs. The polarization‐induced energy band shifts are shown to be nearly the same for static polarizations (giving rise to the clamped electro‐optic effect) and for optical‐frequency electronic polarizations (giving rise to nonlinear optical effects).

ISSN:0003-6951    

DOI:10.1063/1.1651850

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The dependence of the parameters of the Gaussian mode in laser resonators on the properties of the medium in the cavity is studied. Experimental verification of the theoretical results is presented. It is found that the modes in a high‐gain laser may differ widely from the usual free space resonator results. Also, resonator configurations which in free space are unstable may, with a suitable medium, support low‐loss Gaussian modes.

ISSN:0003-6951    

DOI:10.1063/1.1651851

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

By controlling the illumination intensity along a sample of photoconducting GaAs, the point of nucleation of the high field domain has been varied. When a very thin line shadow was projected on an illuminated sample, the oscillation frequency corresponded to the distance between the shadow and the anode and could be varied continuously over a range of about 5:1 by varying the position of the shadow along the sample.

ISSN:0003-6951    

DOI:10.1063/1.1651852

出版商:AIP    

年代:1968

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.1651854

出版商:AIP    

年代:1968

数据来源: AIP