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Semiconductor lasers such as FP, DFB, VCSEL and more are essential devices for regulating and improving the Internet and communication sector in the world. Laser’s outstanding properties such as high efficiency of the electrical energy into photons, excellent reliability, small footprint, modulation bandwidth, and low cost have made it a principle component in various communication applications. Vertical Cavity Surface Emitting Laser is one such laser that is largely used in various industrial and military applications. Let's know what is VCSEL in detail. What is VCSEL? VCSEL   is the type of semiconductor laser diode with laser beam emission perpendicular from the top surface, as opposed to conventional edge-emitting semiconductor lasers which emit from surfaces. Compared to conventional edge-emitting light diodes, VCSEL emits light or a vertical beam from its top surface. Now let us comprehend how Vertical Cavity Surface Emitting Laser works. Note that, as it is challenging t...

It is not uncommon to see the use of superluminescent diodes for optical coherence tomography. Because of the unique properties of superluminescent diodes (SLD), such as low coherence light, high brightness, minimal spectral ripple, and a broad, smooth optical output spectrum, it is the preferred and perfect solution for optical coherence tomography. However, in order to comprehend why superluminescent diodes are used for optical coherence tomography, let's understand these things. Why Use Superluminescent Diodes For Optical Coherence Tomography? Let’s start with a quick overview of OCT. Optical coherence tomography is an imaging technique that captures micrometer-resolution, two- and three-dimensional images from within optical scattering media using low-coherence light. It’s used in medical imaging and non-destructive testing in the workplace. To put it another way, OCT is a new technology for high-resolution cross-sectional imaging. Superluminescent Diodes For Optical Coherence...