Compact extended-cavity diode laser for atomic spectroscopy and metrology

Abstract

We report on a compact, inexpensive, and durable extended-cavity diode laser ͑ECDL͒ of an original mechanical concept. The independent temperature control of a laser diode and an extended cavity provides a low-frequency drift. The linewidth of a few hundred kilohertz was measured by taking a beating of two identical ECDLs. The continuous tuning range of about 1 Å is achieved by the synchronous scan of two piezotransducers translating and rotating an external diffraction grating. The laser has been used in high-resolution spectroscopy, atom cooling, metrology, and precise interferometry.

Structure of magnetic resonance in 87Rb atoms

“…Then, in the vicinity of |δ| ≲ Γ 1, 2 , we have (11) Experimental curve 5 in Fig. 2 has a peak at the point δ = 0; consequently, Γ 1 > Γ 2 /2.…”

“…1. A diode laser with an external cavity whose design allowed the smooth continuous variation of the frequency within the D 1 line of 87 Rb [11] was used as a source of monochromatic radiation resonant to the F g = 1 F e = 1 transition. A fraction of laser radiation tuned to the center of the Doppler line was guided to the frequency stabilization system based on the dichroic atomic vapor laser lock (DAVLL [12]).…”

Dynamic control of EIT by changing optical phase

“…An extended-cavity diode laser (ECDL) is used as a source of a monochromatic emission (spectral width51 MHz) [27]. The laser beam (diameter $0.1 cm) is highly linearly polarized after an optical isolator which prevents stray optical feedback from the optical elements in the setup from destabilizing the laser.…”

Power spectra and correlations of intensity fluctuations in electromagnetically induced transparency

“…We have used an extended-cavity diode laser (ECDL) as described in [18]. The laser beam (diameter 0.1 cm) is highly linearly polarized after an optical isolator which reduced a stray optical feedback from the optical elements of the setup.…”