High-Performance Laser Diode Illuminators

The ldi family

The LDI is a multiline, solid-state laser illuminator offering up to 1000mW of output power via a multimode fiber at the price of a low power LED light engine. With feedback-controlled output stability and up to a 100:1 linear dynamic range, the LDI is the ideal light source for a wide range of applications including spinning disk confocal microscopy, structured illumination microscopy, FRAP, photoactivation / photoconversion, and PALM/STORM.

APPLICATIONS

Our Light Engines Are Used Inside the Nation's Most Advanced Labs

Here are just a few of the prestigious institutions we service:

Features and Benefits

High output power

Feedback-controlled optical stability

  • Quantitative imaging, ideally suited for ratiometric imaging
  • More repeatable optogenetics experiments

ease of use

  • Ability to turn power down when needed and maintain stability and quantitative imaging
  • Up to 7 lines covers most of the standard fluorescence probes
  • No user alignment
  • Easy to use and maintain

89 north LDI Light Engine PRODUCT LINE OVERVIEW

We now offer a full range of LDI light engine products, including laser lines 488, 577 and into the NIR. Other laser lines are available upon request.

405nm445nm470nm488nm520nm528nm555nm577nm640nm730nm
LDI-4300mW1000mW1000mW400mW
LDI-5-488-577450mW1000mW700mW900mW850mW
LDI-7 300mW1000mW1000mW500mW500mW1000mW400mW
LDI-NIR 450mW1000mW1000mW500mW1000mW900mW850mW
LDI-PRIME*150mW800mW600mW300mW
LDI-4-488-SF*150mW200mW200mW150mW
*SF is small fiber version with a 100μm core fiber optic output
+ PRIME + unit is a single 400μm core fiber optic output
22+ models available today
Option to combine multiple LDIs into single output

Frequently Asked Questions (FAQs)

Here are answers to some of the most frequently asked questions we receive. Not seeing what you are looking for? >> Ask our engineers

The key factors to consider are: wavelength, power, delivery, repeatability, and cost. 89 North can deliver on all factors.

There are many differences but the four most important are:

  1. Small fiber size. The LDI is available in 100um, 400um, or larger fibers.

  2. Linearity. The LDI is an extremely useful light source for quantitative imagine, with linearity tracked internally from 1% to 100%.

  3. Specificity. The wavelengths of light from the LDI are not broad in spectrum line an LED. They are highly specific, which is critical for fluorescent illumination.

  4. Stability. The LDI is a very stable light source, which enables both accuracy any precision of light measurements.

Virtually none. The LDI ships fully aligned, and requires no regular alignment or cleaning.

Multi-mode lasers are the most economical lasers you can buy, on a photon/dollar basis. 89 North improves on this value further by providing light sources that are also quantitative and reliable. Pricing for varying models depending on their individual configuration. Click here to contact us to receive a quote.

Many factors, like wavelength, stability, and maintenance are critical issues that are often overlooked. Don’t just pay attention to cost, as all lasers are not the same.

Absolutely! The LDI is extremely stable, and linear from 1% to 100%.

The LDI is about the size of a small desktop computer. The dimensions are 12.5” x 9.2” x 5.75”, 318mm x 234mm x 146mm. You can find more specifications in the table at the top of the page.

The single most important thing to remember when setting up any laser light source is safety. Always review all documentation carefully, and consult your institution’s laser safety officer with any questions.

Our Light Engines Are Peer Reviewed in Scientific Publications

We have over 240 citations in the world’s most prestigious scientific publications.

Request more information

We can help you select the right light engine for your needs. Note that we can work with you to configure a specialized range of laser lines and options.

Learn More About Our Individual LDI Products

Click on the links below to learn more about specific LDIs.

LDI FAMILY OVERVIEW
ONE SHEET

Download our PDF showing our lineup of LDI multiline, solid-state laser illuminators that offer up to 1000mW of output power per laser line via a multimode fiber at the price of lower power LED light engines.

LDI-4 LASER DIODE
ILLUMINATOR

The LDI-4 laser diode illuminator is a user inspired version of the original LDI-7. Many researchers were asking for a laser launch that covered only the 4 basic lines: DAPI, FITC, TRITC, Cy5.

LDI-NIR LASER
DIODE ILLUMINATOR

The LDI-NIR is the same great multiline, solid-state laser illuminator as the LDI-7, but offers more power and extends the range into the NIR.

LDI-PRIME LASER
DIODE ILLUMINATOR

The LDI-PRIME laser diode illuminator was designed specifically for those researchers whose work demands the 488nm laser.

LDI-7 LASER DIODE
ILLUMINATOR

The LDI-7 is a multiline, solid-state laser illuminator offering up to 1000mW of output power per laser line via a multimode fiber at the price of lower power LED light engines.

LDI-5 LASER DIODE
ILLUMINATOR

The LDI-5 is the big sister of the LDI-4 laser diode illuminator. We listened to our users who asked for a paired down version of the LDI-NIR. The LDI-5 has increased power over the LDI-4 & expands into the near infra-red with a 730nm line

LDI-4-488 SF LASER
DIODE ILLUMINATOR

The LDI-4-488 SF laser diode illuminator is a user inspired version of the LDI-4. Many researchers were asking for a laser launch that covered only the 4 basic lines: DAPI, FITC, TRITC, Cy5 & specific 488nm laser

OEM CAPABILITIES

Learn more about our services for laser system design, custom illumination design, optical system design, and design to manufacture services.