PDF-Tunable Diode Lasers

Tim Day New FocusAt the recent Photonics West and Optical Fiber Conferences companies presented many new products ranging from mechanical products to instruments to complex laser systems As a pr. Thompson and Vladan Vuletic We investigate experimentally the in64258uence of the grating re64258ectivity grating resolution and diode facet antire64258ection AR coating on the intrinsic linewidth of an externalcavity diode laser built with a diffra J Hawthorn K P Weber and R E Scholten a School of Physics The University of Melbourne Parkville Victoria 3052 Australia Received 12 June 2001 accepted for publication 14 September 2001 We have developed an enhanced Littrow con731guration extended ca Sacher Introduction Compared to traditional lasers diode lasers are generally small reliable and easy to operate However tuning characteristics of many commercially available stand ard diode lasers are often far from ideal xternal avity iode asers NanoSat. Detection and Ranging System (SADARS). Maurisa Orona. Andrew Couch. Ed Wilson. Goal of . Mission. Create a satellite . detection and ranging . system . (SADARS. ) for a fleet of . nano. satellites . Monireh. . Moayedi. Pour . Fard. Monireh.moayedipourfard@mail.mcgill.ca. Photonics system group. McGill University. July 2012. Directional Coupler has many applications in photonic systems and optical . The tunable laser could be set to any desired wavelength either in the factory or in the field by a software command.. The performance parameters are:. Power. Spurious mode suppression. Wavelength stability. Clippers, Clampers, Voltage Multipliers and Displays. Diode Clippers. A clipper (or limiter) is a circuit used to eliminate some portion (or portions) of a waveform.. A series clipper is in series with its load.. Dr. Randy Bartels. Team Members. Steven . Dorlac. , Andrew . Wiersma. , . Daxsamuel. . Chitechi. , Derrick . Bernallie. Ultra-Stable Lasers. Project Overview. Develop an Optically-Based Clock. Ultra-Stable External Cavity Diode Laser (ECDL). or . color, in a given spectral range. .. As such, . these . quantum devices have found numerous applications in many diverse fields. .. In particular, tunable lasers have played a crucial and sustained role in advancements of fundamental physics and science. He-Ne Laser. Laser Types. According to the . active material. : . solid-state, liquid, gas, . excimer. or semiconductor lasers. .. Gas: . HeNe. laser, . excimer. lasers, CO. 2. lasers. Liquid:. the active medium is glass denatured by Neodymium ions(Nd +3) (active ions) with doping rate up to (6%). The color of the crystal is purple (8). dimensions of the crystal are from a few microns to (2 cm) length and the diameter (6-10 m). The Pumping using the flash lamp). with an efficiency not exceeding (1.5%) or using a semiconductor laser with an efficiency of up to (70%). It works with a system of quadrupole levels and it dose need good cooling. Tunnel diode is one of the most significant solid-state electronic devices which is . heavily doped with impurities. , it exhibits . negative resistance. . which means the electric current across the tunnel diode decreases when the voltage increases. A . pn. junction is known as a . semi-conductor . or . crystal . diode. .. The outstanding property of a crystal diode to conduct current in . one direction . only permits it to be used as a rectifier. is a special type of device designed to operate in the . zener. breakdown region (. reverse breakdown region. ), The breakdown voltage of a . zener. diode is carefully set by controlling the doping level during manufacture. .