![]() ![]() The grating splits any incident beam from the diode into diffraction orders. The diffraction grating and a high quality end mirror are used to provide an optical feed back to the diode laser. As a consequence the internal cavity is inhibited from lasing. The second facet is antireflection (AR) coated so as to increase the loss due to the internal cavity, thereby raising the threshold level required for lasing to commence. ![]() One facet of the diode laser acts as the end mirror for the external cavity. The external cavity is composed of the diode laser, a diffraction grating and a high quality optical flat mirror. It is for these reasons that it became necessary to developed a tunable external cavity diode laser (ECDL) for optical experiments requiring a light source that has got a narrow line width, no mode hop and can be tuned over some wavelength range.Īn ECDL is a laser system whose resonator is made up of optical elements external to the diode laser itself. These limitations may be serious in many potential applications such as optical communication, high resolution spectroscopy and all applications which require a narrow line width and precise tunability. These, however, suffer several limitations concerning their spectral properties: they are often multimode, have large line width, suffer from mode hops and their wavelength tuning is achieved by varying their temperature. Lett.Most of the existing diode lasers are mainly Fabry-Perot (FP) and distributed feedback (DFB) diode lasers. Zhao, Y., Li, Y., Wang, Q., Meng, F., Lin, Y., Wang, S., Lin, B., Cao, S., Cao, J., Fang, Z., Li, T., Zang, E.: 100-Hz linewidth diode laser with external optical feedback. Zhao, Y.T., Zhao, J.M., Huang, T., Xiao, L.T., Jia, S.T.: Frequency stabilization of an external-cavity diode laser with a thin Cs vapour cell. Wynands, R., Nagel, A.: Precision spectroscopy with coherent dark states. Vitiello, M.S., Consolino, L., Bartalini, S., Taschin, A., Tredicucci, A., Inguscio, M., De Natale, P.: Quantum-limited frequency fluctuations in a terahertz laser. Vassen, W., Zimmermann, C., Kallenbach, R., Hänsch, T.W.: A frequency-stabilized titanium sapphire laser for high-resolution spectroscopy. Tombez, S.Schilt, Di Francesco, J., Führer, T., Rein, B., Walther, T., Di Domenico, G., Hofstetter, D., Thomann, P.: Linewidth of a quantum cascade laser assessed from its frequency noise spectrum and impact of the current driver. Schilt, S., Bucalovic, N., Tombez, L., Dolgovskiy, V., Schori, C., Di Domenico, G., Zaffalon, M., Thomann, P.: Frequency discriminators for the characterization of narrow-spectrum heterodyne beat signals: application to the measurement of a sub-hertz carrier-envelope-offset beat in an optical frequency comb. Schawlow, A.L., Townes, C.H.: Infrared and optical masers. Paboeuf, D., Schlosser, Peter J., Hastie, Jennifer E.: Frequency stabilization of an ultraviolet semiconductor disk laser. ![]() Myers, T.L., Williams, R.M., Taubman, M.S., Gmachl, C., Capasso, F., Sivco, D.L., Baillargeon, J.N., Cho, A.Y.: Free-running frequency stability of mid-infrared quantum cascade lasers. Kaspar, S., Rosener, B., Rattunde, M., Topper, T., Manz, C., Kohler, K., Ambacher, O., Wagner, J.: Sub-MHz-linewidth 200-mW actively stabilized 2.3 μm semiconductor disk laser. Kasevich, M., Chu, S.: Atomic interferometry using stimulated Raman transitions. Hirata, S., Akatsuka, T., Ohtake, Y., Morinaga, A.: Sub-hertz-linewidth diode laser stabilized to an ultralow-drift high-finesse optical cavity. Henry, C.H.: Theory of the linewidth of semiconductor lasers. Galzerano, G., Gambetta, A., Fasci, E., Castrillo, A., Marangoni, M., Laporta, P., Gianfrani, L.: Absolute frequency measurement of a water-stabilized diode laser at 1.384 μm by means of a fiber frequency comb. 32, 3817–3823 (2014)Įlliott, D.S., Roy, Rajarshi, Smith, S.J.: Extracavity laser band-shape and bandwidth modification. 15, 1523–1527 (2005)ĭumont, P., Camargo, F., Danet, J., Holleville, D., Guerandel, S., Pillet, G., Baili, G., Morvan, L., Dolfi, D., Gozhyk, I., Beaudoin, G., Sagnes, I., Georges, P., Lucas-Leclin, G.: Low-noise dual-frequency laser for compact Cs atomic clocks. 41, 1019–1025 (2009)īorisov, P.A., Melentiev, P.N., Rudnev, S.N., Balykin, V.I.: Simple system for active frequency stabilization of a diode laser in an external cavity. 104, 083904-1–083904-4 (2010)īayrakli, I., et al.: Grating-coupled external-cavity short-wavelength InGaAs/InAlAs/AlAs quantum-cascade lasers. 104, 040503-1–040503-4 (2010)īartalini, S., Borri, S., Cancio, P., Castrillo, A., Galli, I., Giusfredi, G., Mazzotti, D., Gianfrani, L., De Natale, P.: Observing the intrinsic linewidth of a quantum-cascade laser: beyond the schawlow-townes limit. Afzelius, M., Usmani, I., Amari, A., Lauritzen, B., Walther, A., Simon, C., Sangouard, N., Minar, J., de Riedmatten, H., Gisin, N., Kroll, S.: Demonstration of atomic frequency comb memory for light with spin-wave storage. ![]()
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