Do you lose detection of lower wavelengths when using near infrared (NIR) imaging?

Due to the detectors’ design, you retain full availability to detect wavelengths starting at 400 nm. Lower wavelength emissions can still be collected at that range. We still have our standard and GaAsP photomultiplier tubes (PMTs) as well, so NIR is more like an add-on.

What are the benefits of using NIR over two-photon microscopy?

Two-photon microscopy is typically used for high-depth imaging in the red part of the spectrum. NIR offers an easy entry point into this application in a cost-effective way. With NIR, you can use confocal microscopes, so you don’t need to enter into a different class of microscopy system. As well as being much less expensive, NIR also offers greater multiplexing and spectral capabilities.

What is the VPH grating used for inside the microscope?

Volume-phase holographic (VPH) grating is part of our TruSpectral technology in standard and GaAsP detectors. It is used to generate the spectrum of light for spectral imaging. The advantage of VPH grating is that it is much more light efficient than using other reflection-type spectral gratings.

Do I have to purchase NIR lasers with the system or can I upgrade later?

One of the great features of this system is its modularity, so it can be upgraded at any time to add NIR lasers and detectors.

Is the six-detector mode available on both the IX and BX series?

Yes, the six-detector mode is available on both the IX series of inverted microscopes and the BX series of upright microscopes.

Does the FV3000 support NIR excitation wavelengths other than 730 and 785 nm?

The 730 nm and 785 nm laser lines are carefully selected as a result of cooperation with a specialized manufacturer that develops high-quality, stable lasers at these wavelengths.

However, there is a laser port available for the NIR range, so customization is possible. We encourage conversations to discuss the possibility of using different laser lines. The FV3000 microscope’s beam combiner makes it highly amenable to customization, and the system has optical coatings that support wavelengths out to 1600 nm, so users also have the ability to route their own NIR lasers into the system.

Can you image 730 and 785 nm on the same image set?

It is currently not possible to image both 730 nm and 785 nm, but we are always working to improve the system.

What are the differences between GaAsP detectors and competitors’ newest detectors?

We have not compared the systems side by side, but it’s important to remember that the detector is just one part of the whole system sensitivity. Make sure to look at the whole optical train and attached optics and how well they do in the NIR range. We know that there are several aspects during the light path that increase light efficiency in the NIR range, and it is also important that the optics are suited for the NIR range.

Can you use a white light laser with the FV3000 microscope?

White light lasers (WLLs) are not available on the FV3000 system. Olympus has a broad range of laser lines, which allow us to adapt the system for the needs of individual users and match the laser to their applications. There is also a cost-effectiveness factor and the advantage of the whole system not needing to be down if there is a problem with the WLL. Instead, you have individual laser lines that are affordable and easy to change.