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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: IEEE J Sel Top Quantum Electron. 2010;16(3):619–626. doi: 10.1109/JSTQE.2009.2032666

Figure 2.

Figure 2

Demonstration of speckle reduction in LEBS from a dried paint sample (ls* ~ 4μm). Panel a: EBS measurement obtained with Helium Neon (HeNe) laser. Panel b: average of 30 ensembles of EBS measurements collected with HeNe laser. The EBS signal begins to be visible over the speckle noise. Panel c: a single measurement with partial coherence illumination (LSC = 160μm). Panel d: a sinlge measurement with partial coherence measurement (LSC = 20μm).