Spectral parameters of reference-cavity-stabilised lasers

Journal Article · Wed Apr 30 04:00:00 EDT 2008 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2008V038N04ABEH013680· OSTI ID:21466801

Matveev, A N; Kolachevsky, N N ^[1]; Alnis, J ^[2]; Haensch, T W ^[3]

---

1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. Max Planck Institut fur Quantenoptik, Garching (Germany)
3. Ludwig-Maximilians-University of Munich (Germany)

Spectral characteristics of laser systems used for precision two-photon spectroscopy of the 1s-2s transition in the hydrogen atom are analysed. The spectral properties of radiation from a 972-nm external-cavity semiconductor laser stabilised by external monolithic cavities of different configurations are considered in detail. The classical cavity scheme with a horizontal axis and a new scheme with a vertical axis, which is weakly sensitive to vibrations, are considered. The emission spectrum of a stabilised laser exhibits a narrow central peak and a pedestal caused by the residual phase noise. The semiconductor laser stabilised with respect to the vertical-axis cavity emits the line of width less than 0.45 Hz, which contains {approx}99% of the total output power. The transformation of the emission spectrum upon frequency doubling in nonlinear crystals is investigated. The laser system developed in the study provides the narrowing of the recorded 1s-2s transition line in the hydrogen atom down to 2 kHz at 121 nm. (laser spectroscopy)

• OSTI ID: 21466801
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 4 Vol. 38; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BOSONS
CRYSTALS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION SPECTRA
FREQUENCY RANGE
HYDROGEN
KHZ RANGE
LASER CAVITIES
LASER SPECTROSCOPY
LASERS
LINE WIDTHS
MASSLESS PARTICLES
NOISE
NONLINEAR PROBLEMS
NONMETALS
PHOTONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
SPECTRA
SPECTROSCOPY