Ch. 18. Laser Sources Sec. 18.1. Types of Light Tubes
Super Luminescent Diodes: Also known as SLDs. Best all around choice for force curve measure-
ments. Slightly higher noise than the laser diode sources, but remarkably lower oscillating background
for force curve work.
Small Spot: 3µm by 9µm spot size. Mandatory for cantilevers smaller than the large spot, to prevent
light from spilling over the sides.
Standard Spot: 10µm by 30µm spot size. Preferable for larger (traditional) cantilevers since a spot that
fully fills the cantilever leads to lower imaging noise..
Part # Item Description Picture
901.601 SLD assembly, standard spot size.
901.602
SLD assembly, small spot size.
901.603
Laser Diode assembly, standard spot
size.
BETA
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