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QD Laser release 4-colour fibre-coupled modules

11 January 2022 | AP Technologies Ltd

QD Laser release 4-colour fibre-coupled modules

QD Laser have introduced a compact fibre-coupled laser module which combines four wavelengths of laser diode into a single fibre output.


The new QLMF02 4-colour module is a just 80mm x 80mm x 30mm and incorporates a thermoelectric cooler for precise temperature control and stabilisation along with a choice of singlemode or polarisation maintaining fibre and an FC/PC or FC/APC connector.

A choice of one of QDL's award-winning QDL0593-series frequency-doubled 532nm, 561nm or 594nm lasers is available. These lasers combine narrow linewidth near infrared DFB/SOA lasers with waveguide Periodically Poled Lithium Niobate (PPLN) frequency doubling to provide narrow linewidth and excellent stability.

Up to three further wavelengths of Fabry-Perot laser diodes can be specified in the range 405nm to 905nm.

A typical application for the 4-wavelength multiplexed module is flow cytometry. A frequently used combination of wavelengths for flow cytometry is 405nm, 488nm, 561nm and 640nm and these are offered in the standard QLM4F02-40485664-1S which features a singlemode pigtail.

Other applications include Ophthalmology/SLO devices combining RGB and NIR lasers - for example the QLM4F02-48536678-1P (488nm, 532nm, 660nm and 785nm) with PM fibre output.

QD Laser have also developed a control board for the 4-colour module. The QBB4M01 driver optimises the DFB and SOA current of the 532/561/594nm laser along with the FP operating currents and TEC. Control of the lasers' power, CW or direct modulation and temperature is via USB and the driver board requires a single 12V supply.

Product Availability

Two standard configurations are offered at launch. The QLM4F02-40485664-1S features singlemode fibre and lasers at 405nm, 488nm, 561nm and 640nm and is ideal for many flow cytometry applications. The QLM4F02-48536678-1S operatees at 488nm, 532nm 660nm and 784nm with a polarisation maintianing fibre output and is well-suited to ophthalmology applications and SLO devices. However, the product platform offers a very high degreee of customisation and other wavelength combinations are welcomed.

For further information on QDL's compact 4-colour fibre-coupled modules please go to the webpage or contact AP Technologies.

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