DFB & DBR laser diodes

Distributed feedback and distributed bragg reflector laser diodes for single frequency lasers

Not just single frequency, but the right frequency - your pick

DFB & DBR laser diodes

Distributed feedback and distributed bragg reflector laser diodes for single frequency lasers

Distributed feedback (DFB) laser diodes feature a grating structure within the semiconductor and thus operate in both longitudinal and transverse single mode. Tuning is achieved by modulating either the laser current or the chip temperature. Mode-hop free tuning is maintained over several hundred GHz. Applications include alkaline spectroscopy, laser cooling, gas detection and the generation of tunable cw terahertz radiation.

The diodes come in various packaging, depending, among other things, on the built-in features. Please check the exact configuration of the diode before ordering. DFB/DBR laser diodes may be integrated into a TOPTICA DFB pro laser system.

Your Benefits

Turnkey single-frequency operation

Features a grating structure within the semiconductor and thus operate in both longitudinal and transverse single mode.

Mode-hop-free scans up to 1400 GHz

Tuning is achieved by modulating either the laser current or the chip temperature. Mode-hop free tuning is maintained over several hundred GHz.

Customize your TOPTICA DFB pro system

Diodes sold separately, but can also be integrated by TOPTICA in a DFB pro system for convenient operation.

System integration

Integrate exactly the diode you need into a TOPTICA DFB pro laser system.

Applications

Integration in DFB pro

Can be integrated in a TOPTICA DFB pro laser system.

Interferometry

In semiconductor manufacturing, perfection is measured in nanometers - or often even less. To measure such minute variations with speed and accuracy, the industry relies on laser-based interferometric metrology - a non-contact, non-destructive optical technique capable of resolving surface and layer thickness with sub-nanometer precision.

HeNe laser replacement

Helium-Neon (HeNe) lasers have been the workhorse of interferometry and precision metrology for decades, providing stable 633 nm emission.

The DFB pro 633 provide the narrow-linewidth and high coherence length that you are used to, at the same wavelength. And it adds Mode-Hop free tunability and ease of integration into your metrology application.

Gas sensing

Many molecules exhibit their strongest absorption features in the mid-infrared region (2–12 μm).
Tunable mid-IR lasers, such as optical parametric oscillators, enable selective, sensitive gas detection for environmental, industrial, and medical applications.

Raman spectroscopy

Well-suited for Raman spectroscopy of inorganic materials, for which no fluorescence obscures the Raman signal. Raman intensity depends on the excitation wavelength by a factor 1/λ4 . Our lasers for this application allow for a strong Raman signal that remains detectable by Si-based detectors.

Semicon inspection & metrology

Laser-based metrology and inspection have become indispensable tools for shrinking feature sizes, more and thinner layers, as well as increasing chip and package areas.