Rapid passage effects in nitrous oxide induced by a chirped external cavity quantum cascade laser

van Helden, J. H.; Peverall, R.; Ritchie, G. A. D.; Walker, R. J.
February 2009
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
Academic Journal
A widely tunable pulsed external cavity quantum cascade laser operating around 8 μm has been used to make rotationally resolved measurements of rapid passage effects in the absorption spectrum of N2O. Rapid passage signals as a function of laser power and N2O pressure are presented. Comparisons are drawn with measurements performed on the same transition with a standard distributed feedback quantum cascade laser. The initial observations on rapid passage effects induced with an external cavity quantum cascade laser show that such high power, widely tunable radiation sources may find applications in both nonlinear optics and optical sensing experiments.


Related Articles

  • Effect of laser annealing on electrical and optical properties of n-mercury cadmium telluride. Dawar, A. L.; Roy, Savita; Nath, Tirlok; Tyagi, Sanjay; Mathur, P. C. // Journal of Applied Physics;4/1/1991, Vol. 69 Issue 7, p3849 

    Deals with a study which investigated the effect of laser irradiation on the electrical and optical properties of n-mercury cadmium telluride (MCT). Impact of laser irradiation on the quality of MCT; Description of the electrical and optical properties of MCT; Conclusions.

  • 2.6 mum optically pumped vertical-cavity surface-emitting laser in the CdHgTe system. Roux, C.; Hadji, E. // Applied Physics Letters;12/13/1999, Vol. 75 Issue 24, p3763 

    Discusses results of a midinfrared vertical-cavity surface-emitting laser (VCSEL) operating at 2.63 micrometer made of cadmium mercury telluride (CdHgTe) ternary alloys. Composition of the resonator; Top mirror reflectivity; Deposition of an additional stack period; Effect of mirror loss on...

  • Study of photovoltaic effect photovoltaic HgCdTe detector irradiated by spectral unrelated laser. Jiang, Tian; Chengi, Xiang-ai; Li, Li; Jiang, Hou-man; Lu, Qi-sheng // Optics & Spectroscopy;Aug2011, Vol. 111 Issue 2, p162 

    A spectral unrelated laser was induced on the short wave and medium wave photovoltaic HgCdTe infrared detectors respectively, under various power density, the detectors had a serious of output. The results show that the two detectors all had response of spectral unrelated laser, but the response...

  • Measurement of intensity of the second optical harmonic in heteroepitaxial cadmium-mercury telluride structures. Burlakov, I.; Demin, A.; Levin, G.; Piskunov, N.; Zabotnov, S.; Kashuba, A. // Measurement Techniques;Jun2010, Vol. 53 Issue 6, p615 

    Features of the generation of the second optical harmonic in the heterostructures HgCdTe/GaAs and CdTe/HgCdTe/GaAs manufactured by means of molecular-beam epitaxy are experimentally investigated for the first time. The dependences of the intensity of a nonlinearly optical signal on the direction...

  • Thermal transport in CO2 laser irradiated fused silica: In situ measurements and analysis. Yang, Steven T.; Matthews, Manyalibo J.; Elhadj, Selim; Draggoo, Vaughn G.; Bisson, Scott E. // Journal of Applied Physics;Nov2009, Vol. 106 Issue 10, p103106-1 

    In situ spatial and temporal temperature measurements of pristine fused silica surfaces heated with a 10.6 μm CO2 laser were obtained using an infrared radiation thermometer based on a mercury cadmium telluride camera. Laser spot sizes ranged from 250 to 1000 μm diameter with peak axial...

  • Temperature and electric potential distribution in the structure pyroelectric–liquid crystal under the action of laser radiation. Shut, V.; Gavrilov, A.; Trublovskii, V. // Journal of Engineering Physics & Thermophysics;Jul2009, Vol. 82 Issue 4, p717 

    The temperature and electric potential distribution in the structure pyroelectric–liquid crystal under the action of laser radiation has been investigated by numerical methods. The influence of the layer characteristics and modulation frequency of the heat flow on the pyrosignal and its...

  • Dependence of laser beam induced current on geometrical sizes of the junction for HgCdTe photodiodes. Feng, Ali; Li, Guang; He, Gang; Sun, Zhaoqi // Optical & Quantum Electronics;Oct2014, Vol. 46 Issue 10, p1277 

    The dependence of laser beam induced current (LBIC) on the junction structure of $$\text {n}^{+}$$ -on-p HgCdTe photodiode has been numerically investigated. The calculated LBIC profiles varying with the junction depth are in good agreement with the experimental results (Musca et al. in J...

  • A Novel Method for In Situ Estimation of HgCdTe Etch Rate in Real Time. Apte, Palash // Journal of Electronic Materials;Sep2015, Vol. 44 Issue 9, p3007 

    A novel and noninvasive method to determine the in situ etch rate (ER) of inductively coupled plasma (ICP)-etched HgCdTe in real time is described. Various relevant output parameters from the ICP tool were analyzed with the goal of finding correlations with the HgCdTe ER. Of the parameters...

  • Mercury cadmium telluride solar cell with 10.6% efficiency. Basol, Bulent M.; Tseng, Eric S. // Applied Physics Letters;4/7/1986, Vol. 48 Issue 14, p946 

    Cd-rich mercury cadmium telluride (MCT) is a promising material for thin-film solar cell applications. In this letter we present data on the deposition of MCT films by a simple electroplating technique and report on the highest efficiency polycrystalline MCT thin-film solar cell to date, which...


Read the Article


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

Try another library?
Sign out of this library

Other Topics