Effect of assembling error in LD array on homogeneity of hollow ducts

JIA Wen-wu; WANG Yue-feng; LEI Cheng-qiang; HUANG Feng

doi:10.3969/j.issn.1001-3806.2012.01.024

In order to improve the performance of a hollow duct pumping system,how assembling error of a laser diode(LD) array affects the homogeneity of hollow ducts was studied by means of theoretical analysis and ZEMAX simulation.The result shows that the more each beamlet in a LD array is segmented,the less homogeneity is affected by beam direction error in LD array.Based on the above,collimating principle of LD beam in a hollow duct pumping system was proposed.That is,the collimated divergence of a LD array in fast and slow direction should be in a certain value to make sure that each beamlet can reflect several times in both directions.This can help to get a high coupling efficiency and make it insensitive to assembling error in LD array.This research is valuable for designing such kind of LD pumping systems.

Effect of assembling error in LD array on homogeneity of hollow ducts

Corresponding author: WANG Yue-feng, wyfmail@sina.com;

1. Department of Optics and Electron, Ordnance Engineer College, Shijiazhuang 050003, China

Received Date: 2011-04-18

Accepted Date: 2011-05-04

Available Online: 2012-01-25

Abstract: In order to improve the performance of a hollow duct pumping system,how assembling error of a laser diode(LD) array affects the homogeneity of hollow ducts was studied by means of theoretical analysis and ZEMAX simulation.The result shows that the more each beamlet in a LD array is segmented,the less homogeneity is affected by beam direction error in LD array.Based on the above,collimating principle of LD beam in a hollow duct pumping system was proposed.That is,the collimated divergence of a LD array in fast and slow direction should be in a certain value to make sure that each beamlet can reflect several times in both directions.This can help to get a high coupling efficiency and make it insensitive to assembling error in LD array.This research is valuable for designing such kind of LD pumping systems.

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Reference (10)

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Effect of assembling error in LD array on homogeneity of hollow ducts

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