Discover how ultrafast lasers and terahertz (THz) technology are transforming industries with insights from Michel Begin, an expert in advanced photonics solutions. Learn about THz generation, femtosecond fiber lasers, and the exciting future of this groundbreaking technology. Michel, what makes THz radiation special compared to other spectral bands of the electromagnetic spectrum? THz waves have unique properties that set them apart. They can penetrate various non-conductive materials such as plastics, fabrics,…
Narrow-Linewidth DFB Laser Diode with Unique Modulation ResponseEdge-emitting distributed feedback laser (DFB) diodes are small-sized laser sources that can be produced in high volumes at a low cost. They are widely deployed in telecommunication systems and have proven to be reliable over years of continuous operation. DFB diodes typically exhibit high levels of spontaneous emission resulting in frequency noise that may negatively affect the performance of some applications. Commercially available…
Introduction Linearly polarized fiber lasers are required in many applications such as sensing, nonlinear frequency conversion, and for coherent or polarization beam combining. To obtain linearly polarized fiber lasers, a polarizer can be used at the output or inside the fiber laser cavity to select a single polarization. But this technique presents several disadvantages such as increased cost, higher insertion losses, power limitations, and reliability issues. A much more effective…
Fiber Bragg gratings can be used to obtain different wavelength reflectivity profiles that depend on the refractive index pattern that is inscribed in the fiber. By relying on proven in-house design and simulation tools and state-of-the-art grating inscription methods, unique ultra-narrowband fiber-based optical filters can be realized. In addition to a bandwidth (BW) that can be as narrow as 2 GHz or 50 MHz, depending on the type of filter, fiber Bragg…
