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2. Laser diode - Wikipedia

   en.wikipedia.org/wiki/Laser_diode

   A distributed-feedback laser (DFB) is a type of single-frequency laser diode. [11] DFBs are the most common transmitter type in DWDM systems. To stabilize the lasing wavelength, a diffraction grating is etched close to the p–n junction of the diode. This grating acts like an optical filter, causing a single wavelength to be fed back to the ...

3. Distributed Bragg reflector laser - Wikipedia

   en.wikipedia.org/wiki/Distributed_Bragg...

   Other practical types of single frequency laser diodes include DFB lasers and external cavity diode lasers. A fourth type, the cleaved-coupled-cavity laser has not proven to be commercially viable. VCSELs are also single frequency devices. [1] The DBR laser structure is fabricated with surface features that define a monolithic, single mode ...

4. List of laser types - Wikipedia

   en.wikipedia.org/wiki/List_of_laser_types

   Flashlamp, laser diode Mostly used for pulsed pumping of certain types of pulsed Ti:sapphire lasers, combined with frequency doubling. Neodymium-doped yttrium orthovanadate (Nd:YVO 4) laser 1.064 μm laser diode Mostly used for continuous pumping of mode-locked Ti:sapphire or dye lasers, in combination with frequency doubling. Also used pulsed ...

5. Diode-pumped solid-state laser - Wikipedia

   en.wikipedia.org/wiki/Diode-pumped_solid-state_laser

   High power lasers use a single crystal, but many laser diodes are arranged in strips (multiple diodes next to each other in one substrate) or stacks (stacks of substrates). This diode grid can be imaged onto the crystal by means of a lens. Higher brightness (leading to better beam profile and longer diode lifetimes) is achieved by optically ...

6. Distributed-feedback laser - Wikipedia

   en.wikipedia.org/wiki/Distributed-feedback_laser

   A distributed-feedback laser (DFB) is a type of laser diode, quantum-cascade laser or optical-fiber laser where the active region of the device contains a periodically structured element or diffraction grating. The structure builds a one-dimensional interference grating (Bragg scattering), and the grating provides optical feedback for the laser.

7. Laser - Wikipedia

   en.wikipedia.org/wiki/Laser

   In 2012, Nichia and OSRAM developed and manufactured commercial high-power green laser diodes (515/520 nm), which compete with traditional diode-pumped solid-state lasers. [ 76 ] [ 77 ] Vertical cavity surface-emitting lasers ( VCSELs ) are semiconductor lasers whose emission direction is perpendicular to the surface of the wafer.