TITLE

Low divergence single-mode surface emitting quantum cascade ring lasers

AUTHOR(S)
Mujagić, E.; Hoffmann, L. K.; Schartner, S.; Nobile, M.; Schrenk, W.; Semtsiv, M. P.; Wienold, M.; Masselink, W. T.; Strasser, G.
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/20/2008, Vol. 93 Issue 16, p161101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe the fabrication and operation of surface emitting second-order distributed feedback quantum cascade ring lasers. The devices exhibit single-mode emission at a wavelength of 3.95 μm with a side mode suppression ratio of 25 dB. A linear tuning coefficient of 0.13 cm-1/K is observed. A single longitudinal mode in the ring shaped resonator results in a highly symmetric far-field pattern and a low beam divergence, represented by a full width at half maximum of ∼3°. Based on these characteristics the presented compact coherent light source may find its way into today’s midinfrared spectroscopy applications.
ACCESSION #
35279365

 

Related Articles

  • Dual band terahertz metamaterial absorber: Design, fabrication, and characterization. Qi-Ye Wen; Huai-Wu Zhang; Yun-Song Xie; Qing-Hui Yang; Ying-Li Liu // Applied Physics Letters;12/14/2009, Vol. 95 Issue 24, p241111 

    We report the design, simulation, and measurement of a dual-band metamaterial absorber in the terahertz region. Theoretical and experimental results show that the absorber has two distinct and strong absorption points near 0.45 and 0.92 THz, both which are related to the LC resonance of the...

  • FTIR Study of the retardation effect of boric acid on the cyclization reaction of polyacrylonitrile. Qin Ouyang; Lu Cheng; Haojing Wang; Kaixi Li // e-Polymers;Feb2009, p1 

    A retardation effect of boric acid on the cyclization reaction of polyacrylonitrile (PAN) was clearly observed by Fourier transform infrared spectroscopy. The Lewis acid nature of boric acid probably accounts for this retardation effect. A quantitative evaluation of this effect was also made,...

  • Holmium-doped silica fiber designs extend fiber lasers beyond 2 μ. Samson, Bryce; Oulundsen, George; Carter, Adrian; Bowman, Steven R. // Laser Focus World;Aug2012, Vol. 48 Issue 8, p47 

    The article offers information on fabrication of optical fiber to extend fiber lasers beyond 2 micrometer. It states that a 140 W, 2.13 micrometer mid-infrared fiber laser operating with 60 percent slope efficiency is possible using holmium-doped silica fibres operating at the long wavelength...

  • Observation of whispering gallery modes in nanocrystalline diamond microdisks. Wang, C. F.; Choi, Y-S.; Lee, J. C.; Hu, E. L.; Yang, J.; Butler, J. E. // Applied Physics Letters;2/19/2007, Vol. 90 Issue 8, p081110 

    Nanocrystalline diamond microdisks have been fabricated and characterized. The process conditions were chosen to ensure smooth and vertical sidewalls. Focused ion beam milling was used to create ultrasmooth sidewalls. Whispering gallery modes were observed near the nitrogen-vacancy center...

  • GIDALARIN KALÄ°TE ÖZELLÄ°KLERÄ°NÄ°N BELÄ°RLENMESÄ°NDE YAKIN KIZILÖTESÄ° (NIR) SPEKTROSKOPÄ°SÄ°. Ertugay, Mustafa Fatih; Baslar, Mehmet // GIDA / The Journal of FOOD;2011, Vol. 36 Issue 1, p49 

    Near infrared (NIR) spectroscopy, based on the absorption of electromagnetic radiation at wavelengths in the range 780-2500 nm, provides an alternative, non-destructive and rapid technology applied increasingly for determination of food constituents in recent years. This technique has been used...

  • Controlling the outcoupled power in a dual wavelength optically pumped semiconductor laser. Ongstad, Andrew P.; Kaspi, Ron; Tauke-Pedretti, Anna; Chavez, Joseph C.; Tilton, Michael L.; Dente, Gregory C. // Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241111 

    We present a study of a dual wavelength optically pumped midinfrared semiconductor laser. In order to control the outcoupled power of each wavelength, the modal overlap between the adjacent gain regions was minimized while the pump absorbance for each gain region was balanced. The nominal power...

  • Thermal trimming and tuning of hydrogenated amorphous silicon nanophotonic devices. Selvaraja, Shankar Kumar; Bogaerts, Wim; VanThourhout, Dries; Schaekers, Marc // Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p071120 

    Deposited silicon and, in particular, hydrogenated amorphous silicon forms an attractive alternative platform for realizing compact photonic integrated circuits. In this paper we report on trimming (toward lower wavelengths) and tuning (toward higher wavelengths) of photonic devices through a...

  • Multichannel filters via Γ-M and Γ-K waveguide coupling in two-dimensional triangular-lattice photonic crystal slabs. Ya-Zhao Liu; Rong-Juan Liu; Shuai Feng; Cheng Ren; Hai-Fang Yang; Dao-Zhong Zhang; Zhi-Yuan Li // Applied Physics Letters;12/15/2008, Vol. 93 Issue 24, p241107 

    We demonstrate the design, fabrication, and characterization of a multichannel filter in a two-dimensional triangular-lattice photonic crystal slab. The output signal channel, which directs in the Γ-M crystalline direction, is orthogonal to the input signal channel that directs in the...

  • Fabrication and design of an integrable subwavelength ultrabroadband dielectric mirror. Lu Chen; Huang, Michael C. Y.; Mateus, Carlos F. R.; Chang-Hasnain, Connie J.; Suzuki, Y. // Applied Physics Letters;1/16/2006, Vol. 88 Issue 3, p031102 

    We have designed and fabricated a subwavelength grating (SWG) broadband mirror whose performance depends on key factors, including SWG period, duty cycle, and angle of incident light. The fabricated SWGs exhibit high reflectivity (>=96%), when the grating periods are varied from 650 to 750 nm...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics