Large-area traveling-wave photonic mixers for increased continuous terahertz power

Michael, E. A.; Vowinkel, B.; Schieder, R.; Mikulics, M.; Marso, M.; Kordoš, P.
March 2005
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p111120
Academic Journal
A large-aperture design for terahertz traveling-wave photomixers, continuously pumped free space by two detuned diode lasers, is proposed and experimentally verified for devices based on low-temperature-grown GaAs (LT-GaAs). It combines the advantages of conventional interdigitated small-area structures and traveling-wave devices. An output power of 1 μW at the mixing frequency of 1 THz was measured in initial testing, which meets local oscillator power requirements for superconducting heterodyne mixer devices.


Related Articles

  • Pulse symmetry and pulse duration compression in a diode-pumped doubly passively Q-switched Nd:YVO4 lasers with Cr4+:YAG and GaAs saturable absorbers. Yang, K.; Zhao, S.; Li, G. // Applied Physics B: Lasers & Optics;Sep2005, Vol. 81 Issue 5, p633 

    We present a simple technique to improve the symmetry of pulse emitted by doubly passively Q-switched lasers. Using both Cr4+:YAG and GaAs saturable absorbers in the same cavity, a diode-pumped doubly passively Q-switched Nd:YVO4 laser is realized for the fist time. This laser can generate more...

  • Fluence homogenization of a 240 J-diode-laser pump system for a multi-pass solid state laser amplifier. Siebold, M.; Podleska, S.; Hein, J.; Hornung, M.; Bödefeld, R.; Schnepp, M.; Sauerbrey, R. // Applied Physics B: Lasers & Optics;Sep2005, Vol. 81 Issue 5, p615 

    Within the POLARIS project multi-pass amplification to the 10 joule level for a femtosecond CPA laser system has been achieved by diode-pumping an Yb3+ doped fluoride-phosphate glass disk with a total energy of 240 J. The collimated light of 40 diode stacks is focussed onto a circular area of...

  • Ultraviolet diode laser system based on the resonant optical feedback method with the capability of fast continuous sweep. K. Toyoda; Y. Kubota; T. Okano; S. Urabe // Applied Physics B: Lasers & Optics;Jan2006, Vol. 82 Issue 1, p25 

    An ultraviolet laser diode system stabilized to an external Fabry–Perot cavity by using the resonant optical feedback method is described. Both wide continuous sweep with fast response and drift compensation for long term operation are realized simultaneously by performing feedforward...

  • Transverse mode competition effects on the dynamics of gain-switched vertical-cavity surface-emitting lasers. Valle, A.; Arizaleta, M.; Thienpont, H.; Panajotov, K.; Sciamanna, M. // Applied Physics Letters;9/29/2008, Vol. 93 Issue 13, p131103 

    An experimental analysis of the nonlinear dynamics of a multi-transverse-mode vertical-cavity surface-emitting laser (VCSEL) when subject to a high-frequency current modulation is performed. Regular periodic dynamics—with periods equal to the modulation period or twice the modulation...

  • Catastrophic optical damage at front and rear facets of diode lasers. Hempel, Martin; Tomm, Jens W.; Ziegler, Mathias; Elsaesser, Thomas; Michel, Nicolas; Krakowski, Michel // Applied Physics Letters;12/6/2010, Vol. 97 Issue 23, p231101 

    Single-pulse tests of the catastrophic optical damage (COD) are performed for three batches of diode lasers with different gain-regions. The tests involve in situ inspection of front, rear, and side of the devices by a thermocamera. Devices with an Al-containing gain-region show COD at the front...

  • Enormously high-peak-power optical pulse generation from a single-transverse-mode GaInN blue-violet laser diode. Kuramoto, Masaru; Oki, Tomoyuki; Sugahara, Tomoya; Kono, Shunsuke; Ikeda, Masao; Yokoyama, Hiroyuki // Applied Physics Letters;2/1/2010, Vol. 96 Issue 5, p051102 

    We have demonstrated extraordinary optical pulse generation with a peak-power of 55 W and pulse duration of 15 ps by intense electrical pulse excitation of a 401 nm GaInN laser diode (LD). Electrical pulse excitation of a GaInN LD which contained a thicker electron blocking layer gave rise to...

  • Mechanical strain and defect distributions in GaAs-based diode lasers monitored during operation. Tran Quoc Tien; Tomm, Jens W.; Oudart, Myriam; Nagle, Julien // Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p111908 

    We monitor the mechanical strain and the defect concentration in AlGaAs–GaAs-based high-power diode laser arrays. This allows studying the interplay between these extrinsic parameters in dependence on device operation. There are two parameters, which contribute to the spread of the...

  • Electrical beam steering of Y-coupled quantum cascade lasers. Ahn, S. I.; Mujagic, E.; Nobile, M.; Detz, H.; Kalchmair, S.; Andrews, A. M.; Klang, P.; Schrenk, W.; Strasser, G. // Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p141113 

    The authors describe electrical beam steering of mid-infrared quantum cascade lasers with a monolithically integrated Y-coupled cavity and electrically separated branches. The deflection of the laser beam is achieved without any additional components such as optic or mechanic systems. This is...

  • Kinetic phase diagrams of GaN-based polariton lasers. Solnyshkov, D.; Ouerdane, H.; Malpuech, G. // Journal of Applied Physics;Jan2008, Vol. 103 Issue 1, p016101 

    The simulations of polariton relaxation and Bose condensation in GaN microcavities (both bulk and with quantum wells) are performed by solving semiclassical Boltzmann equations. A complete set of kinetic phase diagrams for the most important parameters is calculated. We show that such cavities...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics