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Novel Laser Technology for Microchip-size Chemical Sensors

The laser system developed at TU Wien creates many frequencies with equal spacing between them. Credit: TU Wien
The laser system developed at TU Wien creates many frequencies with equal spacing between them. Credit: TU Wien

A special laser system has been developed, using two slightly different frequency combs. This allows for chemical analysis on tiny spaces – it is a millimeter-format chemistry lab. With this new patent-pending technology, frequency combs can be created on a single chip in a very simple and robust manner.

Most lasers have only one color. All the photons it emits have exactly the same wavelength. However, there are also lasers whose light is more complicated. If it consists of many different frequencies, with equal intervals in between, just like the teeth of a comb, it is referred to as a “frequency comb...

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