From a modeling point of view, the evaluation of the full diffraction integral is required to calculate the propagation of light through thick lenses such as fast axis collimation. Both applications clearly demonstrate the suitability of this laser for high-precision measurements. The spatial distribution of the optical feedback field in an external-cavity diode laser (ECDL) is an important parameter influencing its lifetime and filamentation. Compared to most other types of tunable laser (e.g., distributed Bragg reflector laser, vertical cavity surface emitting laser, and distributed feedback laser), external cavity diode laser (ECDL) has been broadly studied and acted as a prior selected laser source for its prestigious characteristics such as narrow linewidth, broad wavelength tuni. At the wavelength of 3.3μm we were able to perform a high resolution absorption measurement of 50ppb Ethane. Our ECDL was part of a MIR-light source which utilizes difference-frequency-generation in PPLN. A tunable true single-mode cw output power of >20 mW is obtained from the ECDL. In addition we approved this light source for high resolution spectroscopy, more precisely for the Cavity-Ring-Down-Spectroscopy (CRDS). The transmission diffraction grating is made with electron-beam lithography. Alignment and coarse tuning adjustments of the L-shaped. To demonstrate the suitability for neutral atom cooling we used this laser as light source in the production of a BEC of over a million 87Rb atoms. Our external cavities use either a 1200 or 1800 line/mm diffraction grating as one end reflector. This laser operates single mode with a mode-hop free tuning range of up to 15GHz without current compensation and a side-mode-suppression better than 50dB at different wavelength between 7nm. The centre wavelength can be preadjusted within the tuning range of 20 nm. The cavity can be established with the use of a diffraction grating where the first order reflection travels back to the diode and again reflects off of the. The coupling efficiency for a single mode fibre exceeds 60%. We report a very compact external cavity diode laser system (ECDL) with an output power of up to 800mW with an almost Gaussian shaped beam quality (M2<1.2). The requirements for a laser system applied in both fields of application are demanding: a mode-hop free tuning range of a few GHz, with a linewidth in the order of 1MHz and an output power of a few 100mW. External-cavity diode laser using a grazing-incidence diffraction grating. Those that can be tuned across wide wavelength ranges remain at least two to three times as expensive as their fixed counterparts, because of the increased complexity of manufacturing them, the extra testing required, and the newness of the technology, which has yet to reach true volume demand. the 1st order diffraction, is reflected back into the laser diode. In a Littrow configuration, the diffraction grating is blazed at an angle. Enhancement of high power lasers with excellent spectral and spatial quality is currently an important research subject. test an electronic control system for an external cavity diode laser. Absract: An external cavity diode laser is created from a conventional laser. Both elliptical and linear polarization emission can be obtained from this. Furthermore these optical features are essential for laser-cooling techniques. Polarization characteristics of an ECDL with diffraction grating are presented. LD: laser diode AR: anti-reflection coating The basic model for an external-cavity laser is based on a 3-mirror compound cavity with amplitude reflectivity r1 at the left facet of the LD, r2 at the right facet of the LD and rext at the external reflector. Moreover, reproducible measurements of the three-dimensional thickness distribution of a thin glass plate indicates that the proposed ECLD can be used for optical coherence tomography imaging systems.The combination of high power, small linewidth and rapid tuneability is essential for many fields in high resolution spectroscopy. 2.1 ECDL of (a) Littrow (b) Littman-Metcalf type mounting. The wavelength separation is realized by a low loss interference. The scanning range and maximum frequency response reached approximately 60 nm and 50 kHz, respectively. Our new NarrowDiode Laser is a small sized and low prices external cavity Diode Laser. We confirm that the wavelengths scanned with the proposed ECLD agree well with theoretical calculations. In fact, the proposed configuration realizes a wide range of wavelength scanning with a simple configuration, highly efficient optical feedback, and a steady optical resonator with a constant cavity length. Thus, the AOD functions as a wavelength-selective device, which helps improve the overall performance of the ECLD. In the proposed configuration, an acousto-optic deflector (AOD) acts not only as a deflector but also as a diffraction grating. Mrtz Applied Physics B 85, 365374 ( 2006) Cite this article 459 Accesses 30 Citations Metrics Abstract We report on recent progress on external cavity diode lasers (ECDL) using a new concept of a Littman/Metcalf configuration. In this study, a novel, to the best of our knowledge, external-cavity laser diode (ECLD) without a diffraction grating is proposed and demonstrated.
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