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半導體激光器教學系統

型號 CA-1220
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型號
CA-1220
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Educational Objectives

l   Types ofLaser Diodes

l   Beam Profile

l   Fast and SlowAxis

l   SpectralProperties

l   LaserThreshold

l   SlopeEfficiency

l   Beam Shaping

l   PolarizationState

Mountedon a rotational unit the spatial distribution of laser diode emission ismeasured. Beam shaping optics allow to collimate the laser beam and to modifyits profile. To determine threshold current and slope efficiency, the relativeoutput power of the diode is measured as a function of the injection current.By means of absorption in an Nd:YAG crystal the dependency on the laserwavelength from the chip temperature and injection current is evaluated. Thestate of polarization in dependence on the diode current is probed by apolarizer. Current, temperature and current modulation of the diode areadjusted on the versatile controller with integrated photo diode amplifier.