High-temperature operation of distributed feedback quantum-cascade lasers at 5.3 μm

Hofstetter, Daniel; Beck, Mattias; Aellen, Thierry; Faist, Jérome
January 2001
Applied Physics Letters;1/22/2001, Vol. 78 Issue 4, p396
Academic Journal
High-temperature operation of a low-threshold 5.3 μm quantum-cascade distributed feedback laser is presented. The emission spectrum was single mode with more than 20 dB side mode suppression ratio for all investigated temperatures and up to thermal rollover. For 1.5% duty cycle and at 0 °C, the laser emitted 1.15 W of single mode peak power; at 120 °C, a value of 92 mW was seen. For a 3 mm long device, we observed a room-temperature threshold current density of 3.6 kA/cm[sup 2]. This remarkable performance is mainly due to a 4 quantum-well active region using a double phonon resonance for the lower laser level.


Related Articles

  • Dynamics of laser-ablated particles from high Tc superconductor YBa2Cu3Oy. Eryu, Osamu; Murakami, Kouichi; Masuda, Kohzoh; Kasuya, Atsuo; Nishina, Yuichirô // Applied Physics Letters;6/26/1989, Vol. 54 Issue 26, p2716 

    The dynamics of light-emitting particles produced by the excimer laser ablation of the high Tc superconductor YBa2Cu3Oy has been investigated by means of space/time resolved optical measurements near the surface region with a space resolution of 100 μm and a time resolution of 0.1 ns. Two...

  • Fiber-optic high-temperature thermal source. Phomsakha, V.; Djeu, N. // Review of Scientific Instruments;Aug1996, Vol. 67 Issue 8, p2987 

    Demonstrates a novel heating element powered by laser radiation via an optical fiber. Absorbed power required in obtaining high temperatures; Use of a prototype device to join gold wires; Applications for the device.

  • A new radiative heater for high T[sub c] thin film growth. Badaye, M.; Gardner, M.; Wong, A.; Dosanjh, P.; Bonn, D.; Hardy, W.N. // Review of Scientific Instruments;Sep98, Vol. 69 Issue 9, p3326 

    Examines the design of a radiative heater used for high temperature thin film growth. Elimination of high temperature variations during thin film growth; Function of design without in situ monitoring and substrate temperature adjustments; Performance of the radiative heater in thin film laser...

  • A laser-ablation system for deposition of high-temperature superconducting thin films for device applications. Tuohiniemi, M.; Kajava, T.; Katila, T.; Salomaa, M.M.; Salomaa, R.; Supponen, E. // Applied Physics A: Materials Science & Processing;1999, Vol. 69 Issue 7, pS451 

    Abstract. We present a compact-size laser-ablation system to produce high-temperature superconducting (HTS) YBa[sub 2] Cu[sub 3]O[sub 7-delta] (YBCO) thin fires for component applications. The system has been designed for deposition of multilayer structures on 5-cm-diameter substrates and for...

  • Fabrication and characterization of pulse laser deposited Ni[sub 2]Si Ohmic contacts on n-SiC for high power and high temperature device applications. Cole, M. W.; Joshi, P. C.; Ervin, M. // Journal of Applied Physics;4/15/2001, Vol. 89 Issue 8 

    Ni[sub 2]Si Ohmic contacts were fabricated via pulsed laser deposition on n-SiC. The contacts electrical, structural, compositional, and surface morphological properties were investigated as a function of annealing temperatures ranging from 700 to 950 °C. The as-deposited and 700 °C...

  • High-temperature superconductivity in ultrathin films of Y1Ba2Cu3O7-x. Venkatesan, T.; Wu, X. D.; Dutta, B.; Inam, A.; Hegde, M. S.; Hwang, D. M.; Chang, C. C.; Nazar, L.; Wilkens, B. // Applied Physics Letters;2/6/1989, Vol. 54 Issue 6, p581 

    We have grown ultrathin films of Y1Ba2Cu3O7-x in situ on (001) SrTiO3 by pulsed laser deposition. The zero resistance transition temperature (Tc0) is >90 K for films >300 Å thick. The critical current density (Jc at 77 K) is 0.8×106 A/cm2 for a 300 Å film and 4–5×106 A/cm2...

  • High-performance, homogeneous broad-gain quantum cascade lasers based on dual-upper-state design. Fujita, Kazuue; Edamura, Tadataka; Furuta, Shinichi; Yamanishi, Masamichi // Applied Physics Letters;6/14/2010, Vol. 96 Issue 24, p241107 

    A broad-gain quantum cascade laser design with dual-upper-state is proposed to clarify its own feasibility. Devices employing the proposed active region design exhibit homogeneously wide (>330 cm-1) electroluminescence spectra of which shapes are insensitive to voltage changes. A buried...

  • Interaction of the continual polarons and the bipolaron formation under action of intense laser field. Mukhomorov, V. K. // European Physical Journal B -- Condensed Matter;Mar2011, Vol. 80 Issue 1, p19 

    It is established, that action of intense laser field results in occurrence of two equivalent positions of a large polaron localization. This paper analyzes the tunneling oscillations of polarons about its equilibrium positions and the interaction between polarons in quasi two-dimensional...

  • Time-integral type strongly correlated electronic thin-film laser energy meter. Zhang, G.-Y.; Zheng, H.-R.; Zhang, X.-Y.; Gao, D.-L.; Zhang, P.-X.; Habermeier, H.-U. // Applied Physics B: Lasers & Optics;Sep2012, Vol. 108 Issue 3, p649 

    Strongly correlated electronic (SCE) systems, such as high-temperature superconducting (HTSC) cuprate and colossal magnetoresistance (CMR) manganite thin films, exhibit giant laser-induced thermoelectric voltage (LITV) effect due to anisotropic Seebeck effect and have a great potential for laser...


Read the Article


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

Try another library?
Sign out of this library

Other Topics