MCL-NSOM 近场扫描光学显微镜

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MCL-NSOM

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美洲

北京欧兰科技发展有限公司

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第17年
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Product Description

The MCL-NSOM is a fully operational near field scanning optical microscope. It has been built on Mad City Labs versatile RM21™ inverted optical microscope which allows users to convert between NSOM, SPM, and fluorescence optical microscopy techniques.

The MCL-NSOM builds on our successful resonant probe SPM and incorporates common elements such as the MadPLL® phase lock loop controller. The NSOM also exploits our expertise in precision motion control by including six axes of motorized positioning, for the sample and NSOM probe, and three axes of closed loop piezo nanopositioning to provide exceptional position resolution and accuracy.

The MCL-NSOM also includes a 635nm laser excitation source, fiber launch, oil immersion objective lens (20x, 0.4 N.A.), CMOS alignment camera and avalanche photodiode detector. The microscope configurable design allows researchers to tailor the instrument for many different optical microscopy techniques including near field spectroscopy.

The MCL-NSOM is operated in aperture mode with shear force feedback. The standard 5 modes are supported: illumination, collection, illumination and collection, reflection and reflection collection. We supply a LabVIEW™ based software package which automates the motion control features.

Instrument overview of MCL-NSOM hardware

Schematic of the probe positioning element

Technical Specifications
Sample micropositioner (XY)	25mm
Lens micropositioner (Z)	50mm
Fiber micropositioning (XYZ)	25mm
Micropositioning step size	95nm
Micropositioning controller	Micro-Drive
Piezo Nanopositioner range of motion (XYZ)	200μm x 200μm x 30μm
Resolution	0.4nm (XY), 0.06nm (Z)
Step size	0.2nm (XY), 0.03nm (Z)
Nanopositioning Controller	Nano-Drive®
Communication	USB 2.0
DAC/ADC	20 bit
TTL outputs	4 channels
NSOM operation	Aperture
Feedback	Shear Force
Phase lock loop controller	MadPLL®
Software	AFMView™
Software compatibility	LabVIEW™
Objective lens	20x, 0.4 N.A. oil immersion (infinity corrected)
Excitation and detection	635nm, 5mW laser diode with fiber launch
	0.3MP fiber alignment CMOS camera
	Avalanche photodiode (200nm-1000nm), 1mm active area)
Supplied accessories	Coaxial illuminator (LED)
	Tuning fork with attached single mode fiber for NSOM
	Tuning forks with etched tungsten tips (3)
	Tuning forks(10)
Power supply	90-260 VAC (50/60Hz)
Operating system	Windows Vista/7/8/10

Images

50 μm x 50 μm images of 500nm diameter polystyrene beads on a glass coverslip. Images taken using Mad City Labs AFM (left) and NSOM (right). NSOM in transmission mode. NSOM data collected using 640nm light with 100x, 1.25 N.A. objective lens and avalanche photodiode.