High power broad area quantum cascade lasers

Bai, Y.; Slivken, S.; Darvish, S. R.; Haddadi, A.; Gokden, B.; Razeghi, M.
November 2009
Applied Physics Letters;11/30/2009, Vol. 95 Issue 22, p221104
Academic Journal
Broad area quantum cascade lasers (QCLs) are studied with ridge widths up to 400 μm, in room temperature pulsed mode operation at an emission wavelength around 4.45 μm. The peak output power scales linearly with the ridge width. A maximum total peak output power of 120 W is obtained from a single 400-μm-wide device with a cavity length of 3 mm. A stable far field emission characteristic is observed with dual lobes at ±38° for all tested devices, which suggests that these broad area QCLs are highly resistant to filamentation.


Related Articles

  • Design Of A Femtosecond Blue Pulse Generation System By Pumping Of Kn Crystal With Cr:LiSAF Lasers. Karami, Hosein; Soltanifard, Mohammad Taghi; Aghbolaghi, Reza // International Journal of Fundamental Physical Sciences;Jun2013, Vol. 3 Issue 2, p24 

    In this paper we described and simulated generation of blue pulse (460nm) by nonlinear KN(KNbO3) crystal ,that pumped by femtosecond diode pumped Cr:LiSAF lasers. Our simulation show that, by focusing of laser oscillator output pulses with characteristics such as 860nm wavelength, 200fs,330MHz...

  • Synrad celebrates 20 years. Kincade, Kathy // Laser Focus World;Dec2004, Vol. 40 Issue 12, p49 

    This article reports that when Peter Laakmann founded Synrad two decades ago, a "cheap," low-power industrial carbon-di-oxide, laser cost around $25,000, was more than 4 ft long, and required an advanced technical degree to operate. The first marketplace to take advantage of the Synrad sealed...

  • Measuring the lasing threshold of a passively Q-switched diode-pumped pulsed solid-state laser. Shatalov, A. F.; Shatalov, F. A. // Instruments & Experimental Techniques;Nov2009, Vol. 52 Issue 6, p854 

    A method for measuring the generation threshold of a passively Q-switched diode-pumped pulsed solid-state laser from the frequency-watt characteristic, which reflects the dependence of the laser-pulse repetition frequency on the absorbed pumping power, is proposed. The results of measuring the...

  • Laboratory System for Quantum Cascade Lasers Researching. MIKOŁAJCZYK, J.; PICHOLA, W.; WOJTAS, J.; MAMAJEK, M.; GARLIŃSKA, M.; PROKOPIUK, A.; BIELECKI, Z. // Acta Physica Polonica, A.;Sep2013, Vol. 124 Issue 3, p505 

    The paper presents a prototype of a driving system designed to laboratory investigations of quantum cascade lasers. Significant requirements of these lasers operation, as well as a construction of the main components of the system were analyzed. During the performed investigations, a tuning...

  • Monolithic integration of vertical-cavity surface-emitting lasers with in-plane waveguides. Witzens, Jeremy; Scherer, Axel; Pickrell, Gregory; Louderback, Duane; Guilfoyle, Peter // Applied Physics Letters;3/7/2005, Vol. 86 Issue 10, p101105 

    The ability to couple light from a vertical-cavity surface-emitting laser into a planar, on-chip waveguide creates new opportunities for achieving higher levels of integration and functionality. Here we propose to use a strong grating etched into a waveguide defined into the top layer of the...

  • 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...

  • A pillar-array based two-dimensional photonic crystal microcavity. Tao Xu; Ning Zhu; Xu, Michelle Y.-C.; Wosinski, Lech; Aitchison, J. Stewart; Ruda, H. E. // Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241110 

    Experimental results are presented for a high quality factor cavity based on pillar arrays. The cavity is formed from a square lattice of silicon pillars of finite height. The quality factor of the fundamental mode is about 7300 when the cavity is in air and 7800 when it is immersed in water....

  • Phase effects in broad-stripe curved-grating distributed feedback heterolasers. Dudelev, V. V.; Sokolovskii, G. S.; Losev, S. N.; Deryagin, A. G.; Kuchinskii, V. I.; Nikishin, S. A.; Holtz, M.; Rafailov, E. U.; Sibbett, W. // Technical Physics Letters;Apr2007, Vol. 33 Issue 4, p292 

    Phase effects in AlGaAs/GaAs quantum-well curved-grating distributed feedback (c-DFB) lasers with focused output radiation has been theoretically studied. The results of analysis are compared to experimental data available for the analogous curved-grating distributed Bragg reflector (c-DBR)...

  • One-dimensional birefringent photonic crystal laser. Kim, Sun Woong; Oh, Seung Seok; Park, Jin Ho; Choi, Eun Ha; Seo, Yoon Ho; Cho, Guang Sup; Park, Byoungchoo // Journal of Applied Physics;Feb2008, Vol. 103 Issue 3, p033103 

    We studied the polarized laser emission from an anisotropic one-dimensional (1D) birefringent photonic crystal (PC) laser. An active medium layer, which consisted of an epoxy resin doped with fluorescent dye, was sandwiched between two anisotropic 1D PC films. It was shown that efficient 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