摘要:

The relationship between the Al mole fraction (x) and the angular separation (&Dgr;&thgr;) of film and substrate maxima in double axis x‐ray diffraction rocking curves for strained epitaxial AlxGa1−xAs films on (110)‐ and (111)‐oriented GaAs substrates was determined. It was derived from measured &Dgr;&thgr;’s for 5000‐A˚‐thick strained epitaxial AlAs films grown by molecular beam epitaxy on (110)‐ and (111)‐oriented GaAs substrates and published values of the AlAs and GaAs lattice parameters and GaAs elastic constants. The critical thickness for relaxation appears to be significantly less for (111)‐ than for (100)‐ and (110)‐oriented films.

ISSN:0021-8979    

DOI:10.1063/1.354171

出版商:AIP    

年代:1993

数据来源: AIP

摘要:

Theoretical analysis of internal frequency doubling in actively mode locked broadband solid state lasers is presented. The analysis is used to study the dependence of mode locked pulsewidth on the second harmonic conversion efficiency, the modulation depth, and the tuning element bandwidth in an AM mode locked Ti: sapphire laser. The results are presented in the form of graphs.  

ISSN:0021-8979    

DOI:10.1063/1.354172

出版商:AIP    

年代:1993

数据来源: AIP

摘要:

Seventeen years ago, Ito, Naito, and Inaba [J. Appl. Phys.46, 3992 (1975)] studied the general nature of induced second‐order nonlinear optical polarizations and their phase matching in biaxial crystal. They derived the expressions of the effective nonlinear coefficients for both type I and type II phase matching. In recent research work, we found some errors in some of the expressions in that paper which were used by some papers published later.  

ISSN:0021-8979    

DOI:10.1063/1.354173

出版商:AIP    

年代:1993

数据来源: AIP

摘要:

As pointed out by the comment of J. Shi, there were several errors in our old communication [J. Appl. Phys.40, 3992 (1975)]. Most of them were collected by other researchers in their own papers; however, this is a nice opportunity to point out all the errors in our paper.

ISSN:0021-8979    

DOI:10.1063/1.354174

出版商:AIP    

年代:1993

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.355346

出版商:AIP    

年代:1993

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.355347

出版商:AIP    

年代:1993

数据来源: AIP