Optically pumped stimulated emission studies in seeded-physical-vapor-phase grown ZnSe samples

Yang, Xing; Song, J. J.; Cantwell, E.; Aldridge, J.

doi:10.1002/pssa.2211270149

Phys. Stat. Sol. (a)

1991

DOI: 10.1002/pssa.2211270149

|View full text |Cite

Optically pumped stimulated emission studies in seeded-physical-vapor-phase grown ZnSe samples

Xing Yang

J. J. Song

E. Cantwell

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1997

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Following [4] and [5], where the inelastic exciton-exciton scattering was proposed as a mechanism of stimulated emission in ZnSe, we explain the nature of the peak P and its red shift by this type of interaction of two excitons. The first exciton dissociates into au electron-hole pair, taking at least Eb (binding energy of the exciton) from the annihilation energy of the second exciton.…”

mentioning

confidence: 90%

Stimulated Emission in Zn(Se,S) Single Crystals

et al. 1997

View full text Add to dashboard Cite

Two different types of optically pumped stimulated emission were observed at 1.8 K in the high quality Zn(Se,S) crystals grown by low temperature physical vapour transport. One type, occurring at moderate excitation levels, is ascribed to the recombination of excitons localized because of chemical disorder in the two-anion mixed crystal. The other type, occurring at high excitation levels, is related to the inelastic exciton-exciton scattering. The high quality Zn(Se,S) crystals were grown by low temperature physical vapour transport technique. The photoluminescence was investigated at 1.8 K. The samples were immersed in pumped liquid helium. Two different ways of optical excitation were used: a continuous beam from a 7 mW He-Cd laser (3.8 eV) or pulses (5 ns, 10 Hz) from a frequency tripled Nd:YAG laser (3.49 eV).He-Cd laser was used to obtain the photoluminescence spectra for the low excitation levels. Opposite to the rich luminescence spectra, which we obtained for ZnSe and for the twocation mixed crystals (Zn,Mg)Se, the near-edge spectra of the twoanion crystals were usually limited to one or two lines in the vicinity of the free exciton (FE) energy.As the energy gap and the free exciton energy depend on the composition of a ternary crystal, we measured the reflectivity spectrum in order to determine the position of the free exciton structure. Then, the photoluminescence lines were reliably located with respect to the middle of the FE structure in reflection.A ZnSe 0.88 S 0.12 crystal was chosen to detailed studies. The low-excitation photoluminescence spectra of the samples from this crystal contained mainly one strong line in the near band-edge region. A second line, 5-6 meV below FE, was more or less pronounced in various samples. The second line can be easily identified as belonging to the donor-bound exciton (see for example [1]). The concentration (871)

show abstract

mentioning

confidence: 90%

Stimulated Emission in Zn(Se,S) Single Crystals

et al. 1997

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Optically pumped stimulated emission studies in seeded-physical-vapor-phase grown ZnSe samples

Cited by 1 publication

References 16 publications

Stimulated Emission in Zn(Se,S) Single Crystals

Stimulated Emission in Zn(Se,S) Single Crystals

Contact Info

Product

Resources

About