Journal ArticleDOI
Spontaneous emission factor of a microcavity DBR surface-emitting laser
TLDR
In this article, the spontaneous emission factor (SEF) of a microcavity distributed Bragg reflector (DBR) surface-emitting laser has been obtained theoretically to investigate the possibility of the thresholdless lasing operation.Abstract:
The spontaneous emission factor (SEF) of a microcavity distributed Bragg reflector (DBR) surface-emitting laser has been obtained theoretically to investigate the possibility of the thresholdless lasing operation. Formulas expressing the spontaneous emission in a three-dimensional microcavity were obtained. By introducing the distribution of mode density in wavevector space, it is shown that the radiation pattern of spontaneous emission is deeply modified by the microcavity and is different from that in free space. Based on this result, the SEF and the emission lifetime are calculated as a function of emission spectral width and the size of the active region. It is found that the SEF exceeds 0.1, even though the spectral width is as large as 30 nm when the transverse size is smaller than 0.5 mu m and the DBR reflectivity is larger than 90%. >read more
Citations
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Journal ArticleDOI
Optical Processes in Microcavities
TL;DR: In this paper, the authors studied optical micro-resonators with dimensions between 0.1 and 10 microns and showed that one can isolate a single mode of the optical field in a cube a halfwavelength on a side with perfectly reflecting walls.
Journal ArticleDOI
Impact of planar microcavity effects on light extraction-Part I: basic concepts and analytical trends
TL;DR: In this article, an approximate approach is used showing the importance of small cavity order m/sub c/ and of the m/ sub c/n/sup 2/ ratio.
Journal ArticleDOI
Strong Purcell effect for InAs quantum boxes in three-dimensional solid-state microcavities
Jean-Michel Gérard,Bruno Gayral +1 more
TL;DR: In this paper, the authors show that the magnitude of the spontaneous emission rate can be quantitatively understood by considering both the Purcell figure of merit F/sub p/ of such cavities and the spatial/spectral distribution of the inhomogeneous collection of atom-like emitters.
Journal ArticleDOI
Physics and Device Applications of Optical Microcavities
TL;DR: Optical microcavities are resonators that have at least one dimension on the order of a single optical wavelength that hold technological promise for constructing novel kinds of light-emitting devices.
Low-Threshold Electrically Pumps Vertical-Cavity Surface-Emitting Microlasers
J. L. Jewell,Axel Scherer,S. L. McCall,Yong-Hee Lee,Stuart D. Walker,J. P. Harbison,L. T. Florez +6 more
TL;DR: In this article, the authors used three GaInAsquantum wells and diameters of several μm with room-temperature pulsed current thresholds as low as 1.3mA with 958 nm output wavelength.
References
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Surface emitting semiconductor lasers
TL;DR: In this paper, a vertical-cavity surface emitting semiconductor laser was proposed to reduce the threshold current of the laser reflector and introduced a circular buried heterostructure, which is 7 mu m long and 6 mu m in diameter.
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GaInAsP/InP surface emitting injection lasers.
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Gain and intervalence band absorption in quantum-well lasers
TL;DR: In this article, the authors analyzed the electronic dipole moment in quantum-well structures and derived the linear gain taking into account the intraband relaxation, and showed that the effects of the intrusion relaxation are 1) shift of the gain peak toward shorter wavelength with increasing injected carrier density even in quantum well structures, 2) increase of gain spectrum width due to softening of the profile, and 3) reduction in the maximum gain by 30-40 percent.
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Design of Fabry-Perot surface-emitting lasers with a periodic gain structure
TL;DR: A detailed analysis of a Fabry-Perot surface emitting laser (FP-SEL) which utilizes the recently proposed concept of periodic gain is presented in this paper, where it is shown that close to a factor-of-two reduction in threshold current should be possible; the ideal reduction of a factor of two is only limited by the internal loss of the cavity.