Department of Physics

Optical tweezers kit

We would like to buy an optical tweezers kit with the following specifications.

The optical tweezers kit should have the following components.

1. Complete optical trapping system with lenses, mirrors and mounts.
2. An IR laser with wavelength in excess of 950 nm, high intensity stability and laser power in excess of 300 mW.
3. 1.25 NA 100x objective to produce the tweezers spot
4. 10x condenser lens to collect the laser light in the forward direction.
5. 3-axis sample positioning stage with integrated piezo actuators for nanometer resolution.
6. Camera with USB interface for video imaging together with software.

Item #
Tweezer Specifications
Spot Size 1.1 µm
Depth of Focus 1 µm
Laser Wavelength >950 nm
Max Power at Fiber Output >300 mW
Objective Specificationsc
Type 100X Immersion Objective
Numerical Aperture 1.25
Input Aperture Ø5 mm
Working Distance 0.23 mm
Wavelength Range 380 - 1100 nm
Condenser Lens Specifications
Type 10X Air Condenser
Numerical Aperture 0.25
Working Distance 7 mm
Wavelength Range 380 - 1100 nm

Gratings for femtosecond laser harmonic spectrograph

Specifications in the attached file.

Membrane vacuum pump

Dry Scroll pump > 35 cubic meter per hour

Specifications in the attached document.

Turbo molecular pump > 1000L/s

Turbo molecular pump > 800L/s

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