Saturated absorption spectroscopy of calcium in a hollow-cathode lamp

U. Dammalapati, I. Norris, E. Riis, UK Engineering and Physical Sciences Research Council (EPSRC) (Funder)

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We report on a technique for obtaining dispersive saturated absorption features by two pump beams derived from an acousto-optic modulator. One of the beams is frequency shifted by the modulator allowing for a variable frequency offset of the resulting signal. They are used to saturate the atomic transition in the low-density vapour of the lamp. The sensitivity of the technique is sufficient to observe clear signals from isotopes of calcium unresolved by the inhomogeneous broadening and with natural abundances of less than 0.2%. The technique is used for offset locking the frequency of a Ti:Sapphire laser used for laser cooling and trapping of calcium.
Original languageEnglish
Article number165001
Number of pages5
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume42
Issue number16
DOIs
Publication statusPublished - 28 Aug 2009

Fingerprint

hollow cathodes
luminaires
calcium
absorption spectroscopy
modulators
laser cooling
acousto-optics
locking
sapphire
isotopes
trapping
vapors
pumps
sensitivity
lasers

Keywords

  • pump beams
  • acousto-optic modulator
  • atomic transition
  • Ti
  • Sapphire laser

Cite this

Dammalapati, U., Norris, I., Riis, E., & UK Engineering and Physical Sciences Research Council (EPSRC) (Funder) (2009). Saturated absorption spectroscopy of calcium in a hollow-cathode lamp. Journal of Physics B: Atomic, Molecular and Optical Physics, 42(16), [165001 ]. https://doi.org/10.1088/0953-4075/42/16/165001
Dammalapati, U. ; Norris, I. ; Riis, E. ; UK Engineering and Physical Sciences Research Council (EPSRC) (Funder). / Saturated absorption spectroscopy of calcium in a hollow-cathode lamp. In: Journal of Physics B: Atomic, Molecular and Optical Physics. 2009 ; Vol. 42, No. 16.
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Dammalapati, U, Norris, I, Riis, E & UK Engineering and Physical Sciences Research Council (EPSRC) (Funder) 2009, 'Saturated absorption spectroscopy of calcium in a hollow-cathode lamp', Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 42, no. 16, 165001 . https://doi.org/10.1088/0953-4075/42/16/165001

Saturated absorption spectroscopy of calcium in a hollow-cathode lamp. / Dammalapati, U.; Norris, I.; Riis, E.; UK Engineering and Physical Sciences Research Council (EPSRC) (Funder).

In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 42, No. 16, 165001 , 28.08.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Saturated absorption spectroscopy of calcium in a hollow-cathode lamp

AU - Dammalapati, U.

AU - Norris, I.

AU - Riis, E.

AU - UK Engineering and Physical Sciences Research Council (EPSRC) (Funder)

PY - 2009/8/28

Y1 - 2009/8/28

N2 - We report on a technique for obtaining dispersive saturated absorption features by two pump beams derived from an acousto-optic modulator. One of the beams is frequency shifted by the modulator allowing for a variable frequency offset of the resulting signal. They are used to saturate the atomic transition in the low-density vapour of the lamp. The sensitivity of the technique is sufficient to observe clear signals from isotopes of calcium unresolved by the inhomogeneous broadening and with natural abundances of less than 0.2%. The technique is used for offset locking the frequency of a Ti:Sapphire laser used for laser cooling and trapping of calcium.

AB - We report on a technique for obtaining dispersive saturated absorption features by two pump beams derived from an acousto-optic modulator. One of the beams is frequency shifted by the modulator allowing for a variable frequency offset of the resulting signal. They are used to saturate the atomic transition in the low-density vapour of the lamp. The sensitivity of the technique is sufficient to observe clear signals from isotopes of calcium unresolved by the inhomogeneous broadening and with natural abundances of less than 0.2%. The technique is used for offset locking the frequency of a Ti:Sapphire laser used for laser cooling and trapping of calcium.

KW - pump beams

KW - acousto-optic modulator

KW - atomic transition

KW - Ti

KW - Sapphire laser

U2 - 10.1088/0953-4075/42/16/165001

DO - 10.1088/0953-4075/42/16/165001

M3 - Article

VL - 42

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

SN - 0953-4075

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M1 - 165001

ER -

Dammalapati U, Norris I, Riis E, UK Engineering and Physical Sciences Research Council (EPSRC) (Funder). Saturated absorption spectroscopy of calcium in a hollow-cathode lamp. Journal of Physics B: Atomic, Molecular and Optical Physics. 2009 Aug 28;42(16). 165001 . https://doi.org/10.1088/0953-4075/42/16/165001