Absolute-frequency measurements of theD2line and fine-structure interval inK39

Tapered-amplified antireflection-coated laser diodes for potassium and rubidium atomic-physics experiments

“…Consequently, diode lasers so far developed which present the capability of tuning across the full spectra of the two species without significant changes in temperature, alignment, or even the laser diode are only of low power, suitable for spectroscopy. 15 Since ECDLs do not usually deliver more than a few milliwatts of useful light, amplification is required for atomic trapping and cooling, by injection locking, 11 through a broad-area laser 16 or via a tapered amplifier. [17][18][19] An alternative is to put the high-power semiconductor element in cavity, resulting in either the tapered laser ͑a commercial example is used in Ref.…”

Hyperfine measurement of $6\text{P}_{1/2}$ state in $^{87}\text{Rb}$ using double resonance on blue and IR transition

“…Precise measurements of the hyperfine structure of various lines in an atom provide key information about the properties of the nucleus such as the electric and magnetic moments. Rb is one of the most widely investigated elements in atomic physics for the spectroscopy both experimentally [1][2][3][4][5][6] and theoretically [7]. This provide great opportunities to verify different methods of theoretical many-body calculations [8,9].…”

“…Besides verifying theoretical calculations, the above referred transitions are used as low cost optical frequency standards. For example, the precisely measured transition 5S 1/2 →5P 3/2 at 780 nm is used as an optical reference for measuring unkown transitions [3]. All these transitions fall in IR region; however, the weak and narrow linewidth (2π × 1.27 MHz [11]) transition in the blue region (i.e.…”

Hyperfine measurement of the 6P1/2 state in 87Rb using double resonance on blue and IR transition

“…Precise measurements of the hyperfine structure of various lines in an atom provide key information about the properties of the nucleus, such as the electric and magnetic moments. Rb is one of the most widely investigated elements in atomic physics for the spectroscopy both experimentally [1][2][3][4][5][6] and theoretically [7]. This provides great opportunities to verify different methods of theoretical many-body calculations [8,9].…”

“…Hyperfine splitting measurements are good sources of input for studying subjects at the interface of atomic and nuclear physics, such as atomic parity violation [10]. Experimentally, hyperfine structures of 5P 3/2 , 5D 3/2 and 7S 1/2 have been measured using single-photon transition 5S 1/2  5P 3/2 at 780 nm [1][2][3], and two-photon transitions, 5S 1/2  5D 3/2 at 778 nm [4] and 5S 1/2  7S 1/2 at 760 nm [2,5,6], respectively.…”