大面积垂直腔面发射激光器的远场动力学:部分相干发射的开始

EQEC '05. European Quantum Electronics Conference, 2005. Pub Date : 2005-06-12 DOI:10.1109/EQEC.2005.1567198

S. Mandre, Ingo Fischer, W. Elsasser, M. Peeter, G. Verschaffelt, J. Danckaert, H. Thienpont, M. Grabherr

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摘要

本文研究了50 μ m孔径广域垂直腔面发射激光器(BA-VCSEL)，并研究了其时间和空间分辨发射行为。为此，采用300ps快门时间的加强型ccd相机，观察BA-VCSEL在准连续波工作下的发射事件。BA-VCSEL泵浦100 μ s长电流脉冲，重复率为50 Hz。测量了BA-VCSEL的远场强度分布。此外，还利用0.55的非球面透镜将近场成像到iccd相机上，测量了近场强度分布

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Farfield dynamics of broad area vertical-cavity surface-emitting lasers: onset of partially coherent emission

This study investigates a 50 mum-aperture broad-area vertical-cavity surface-emitting laser (BA-VCSEL) and studied its temporally and spatially resolved emission behaviour. For this, an intensified CCD-camera is employed with 300 ps shutter time, with which events of the BA-VCSEL's emission in quasi-cw operation is observed. The BA-VCSEL is pumped with 100 mus long current pulses with a repetition rate of 50 Hz. The farfield intensity distribution of the BA-VCSEL is measured. In addition, the nearfield intensity distribution is also measured by using an aspheric lens with an NA of 0.55 to image the nearfield onto the iCCD-camera

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EQEC '05. European Quantum Electronics Conference, 2005.

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