Unusual transverse-mode selectivity in some detuned VCSELs

2008 ◽  
Author(s):  
Robert P. Sarzala ◽  
Maciej Kuc ◽  
Krzysztof Gutowski ◽  
Wlodzimierz Nakwaski
Keyword(s):  
Transverse Mode ◽  
Mode Selectivity

Erratum: Highly reliable 200 mW AlGaAs laser diode with fundamental transverse mode

1993 ◽  
Vol 29 (7) ◽  
pp. 644
Author(s):  
A. Tajiri ◽  
K. Minakuchi ◽  
K. Komeda ◽  
Y. Bessho ◽  
Y. Inoue ◽  
...  
Keyword(s):  
Laser Diode ◽  
Transverse Mode

scholarly journals Supernova constraints on an axion-photon-dark photon interaction

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Anson Hook ◽  
Gustavo Marques-Tavares ◽  
Clayton Ristow
Keyword(s):  
Longitudinal Mode ◽  
Transverse Mode ◽  
The Other ◽  
Unusual Feature ◽  
Dark Sector ◽  
Longitudinal Modes ◽  
Dark Photon ◽  
Transverse Modes ◽  
Weakly Coupled ◽  
Photon Coupling

Abstract We present the supernova constraints on an axion-photon-dark photon coupling, which can be the leading coupling to dark sector models and can also lead to dramatic changes to axion cosmology. We show that the supernova bound on this coupling has two unusual features. One occurs because the scattering that leads to the trapping regime converts axions and dark photons into each other. Thus, if one of the two new particles is sufficiently massive, both production and scattering become suppressed and the bounds from bulk emission and trapped (area) emission both weaken exponentially and do not intersection The other unusual feature occurs because for light dark photons, longitudinal modes couple more weakly than transverse modes do. Since the longitudinal mode is more weakly coupled, it can still cause excessive cooling even if the transverse mode is trapped. Thus, the supernova constraints for massive dark photons look like two independent supernova bounds super-imposed on top of each other.

Sign in / Sign up

Export Citation Format

Share Document