Experimental investigation on the oscillation of very-small-aperture lasers with different depth grooves on their front facets

Gai, Hongfeng; Wang, Jia; Tian, Qi; Xia, Wei; Xu, Xiangang

doi:10.1088/1464-4258/9/11/005

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…36 VSAL was further investigated to realize a high-resolution far-eld scanning optical microscope by controlling the focal length of the transmitted eld's spot. 38,39 A main parameter in the evaluation of the quality of a laser beam at the far-eld, in terms of divergence and directionality, is the directivity of the optical structure fabricated on the laser's facet. An aperture on the facet of a laser cannot enhance the directivity of the beam in the far-eld, instead, it modies the eld's spatial distribution by the aperture's Fourier transformed shape.…”

Section: Semiconductor Lasers With Integrated Optical Antennamentioning

confidence: 99%

Impact of optical antennas on active optoelectronic devices

Bonakdar

Mohseni

2014

Nanoscale

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Remarkable progress has been made in the fabrication and characterization of optical antennas that are integrated with optoelectronic devices. Herein, we describe the fundamental reasons for and experimental evidence of the dramatic improvements that can be achieved by enhancing the light-matter interaction via an optical antenna in both photon-emitting and -detecting devices. In addition, integration of optical antennas with optoelectronic devices can lead to the realization of highly compact multifunctional platforms for future integrated photonics, such as low-cost lab-on-chip systems. In this review paper, we further focus on the effect of optical antennas on the detectivity of infrared photodetectors. One particular finding is that the antenna can have a dual effect on the specific detectivity, while it can elevate light absorption efficiency of sub-wavelength detectors, it can potentially increase the noise of the detectors due to the enhanced spontaneous emission rate. In particular, we predict that the detectivity of interband photon detectors can be negatively affected by the presence of optical antennas across a wide wavelength region covering visible to long wavelength infrared bands. In contrast, the detectivity of intersubband detectors could be generally improved with a properly designed optical antenna.

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Section: Semiconductor Lasers With Integrated Optical Antennamentioning

confidence: 99%

Impact of optical antennas on active optoelectronic devices

Bonakdar

Mohseni

2014

Nanoscale

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Matching the emitting wavelength from a very-small-aperture laser to the resonant property of a nanometric C-aperture

et al. 2007

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An experimental method is proposed to increase the output power from a C-aperture very-small-aperture laser (VSAL). This method is based on the resonant property of a C aperture and the tunability of the emitting wavelength from a VSAL. The drive current of the VSAL is altered to tune the emitting wavelength. The experimental results indicate that, when the emitting wavelength matches the resonant wavelength of the C aperture fabricated on the VSAL, the output power is enhanced 7.2 times. So a strong output power from a C-aperture VSAL can be obtained with small power consumption. This study may be useful to the design and application of a VSAL.

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Experimental investigation on the oscillation of very-small-aperture lasers with different depth grooves on their front facets

Cited by 2 publications

References 24 publications

Impact of optical antennas on active optoelectronic devices

Impact of optical antennas on active optoelectronic devices

Matching the emitting wavelength from a very-small-aperture laser to the resonant property of a nanometric C-aperture

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