A simple extended cavity diode laser for spectroscopy around 640 nm

Controlling the non-linear intracavity dynamics of large He–Ne laser gyroscopes

“…In this paper we extend our previous analysis by presenting a novel identification and calibration procedure for estimating the full set of Lamb parameters, i.e. α 1,2 , r 1,2 , ε 1,2 , self-and cross-saturation coefficients β 1,2 and θ 12,21 , and scale factor and null shift errors σ 1,2 and τ 12,21 , which depend in their turn on cavity losses µ 1,2 , plasma polarizability and single pass gain G of the laser medium.…”

Diode lasers: From laboratory to industry

“…Then the sensitivity of diode lasers to external perturbations was utilized as a standard method for improving their poor spectral properties. To attain tunable output and a narrow optical bandwidth, various techniques have been implemented like injection locking, negative electronic feedback, resonant optical feedback from high-finesse cavities and optical feedback from an extended cavity [7]. Lasers with single optical frequency and narrow linewidth are being used in a wide range of highly significant applications like laser cooling, atomic physics researches and high precision measurements [8].…”

“…4 shows an experimental setup of relative frequency locking (using two ECDLs) to the atomic groundstate hyperfine splitting by using an electromagnetically induced transparency (EIT) resonance in rubidium which was considered an economical and convenient method suitable for many two-frequency experiments such as lasing without inversion, slow light, coherent population trapping and Raman sideband cooling [16]. Some other examples include the resolution of hyperfine structure of the close P63 R70 (8, 4) transitions of iodine [13] with a 690 nm frequency stabilized diode laser setup [17], the oscillation frequency locking of each operating mode of a diode laser coupled to an external cavity to a hyperfine transition or a crossover resonance of the saturated absorption spectrum of cesium D 2 line [18], study of saturated absorption of several neon transitions in a radio-frequency discharge with 640 nm ECDL system [7], observation of Lamb dips in atomic indium spectrum at 410 nm with commercially available GaN-based laser diodes [19], etc.…”

“…Nowadays, diode lasers having diverse output characteristics covering various output wavelength regions are available. The coincidence between available laser wavelengths with optical transitions of different atomic species has prompted the diode laser use in atomic physics [7]. The knowledge of rare earth elements is of particular interest for analytical atomic spectrometry because their content information in rocks not only elucidates geochemical history but is also helpful for petro genetic modeling.…”

Deposition of Aluminum-Doped ZnO Films by ICP-Assisted Sputtering

“…With the progress in diode laser technology, inexpensive tunable single mode diode lasers with external cavity which are also called as external cavity diode lasers (ECDLs) [54][55][56][57][58] have recently been applied for the measurements of velocity distributions of In [59], He [60], Ar discharge is also shown in Fig. 21 for comparison.…”