Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7129576 | Optics & Laser Technology | 2018 | 6 Pages |
Abstract
We developed a tunable laser diode for an optical coherence tomography system that can perform three-dimensional profile measurement using an area scanning technique. The tunable laser diode is designed using an Eagleyard tunable laser diode with a galvano filter. The Littman free space configuration is used to demonstrate laser operation. The line- and bandwidths of this source are 0.27â¯nm (â¼110â¯GHz) and 43â¯nm, respectively, at the center wavelength of 860â¯nm. The output power is 20â¯mW at an operating current of 150â¯mA. A step height target is imaged using a wide-area scanning system to show the measurement accuracy of the proposed tunable laser diode. A TEM grid is also imaged to measure the topography and thickness of the sample by proposed tunable laser diode.
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Authors
Muhammad Faizan Shirazi, Pilun Kim, Mansik Jeon, Chang-Seok Kim, Jeehyun Kim,