Heterodyne frequency measurements of a voltage-controlled diode laser

Hanne Ludvigsen, Christer Holmlund, Erkki Ikonen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


A single-mode GaAlAs diode laser is frequency stabilized by keeping the injection current and the voltage across the laser constant. The stability of the laser is studied by heterodyning it with another laser locked to the center of a hyperfine transition of the D2-line of 85Rb. Alternatively, the frequency stability is observed by tuning the voltage-controlled diode laser to the center of an absorption line of rubidium vapor and recording changes in the absorption signal. In both cases a long-term frequency stability of 4*10-8 is observed.
Original languageEnglish
Pages (from-to)426-429
JournalIEEE Transactions on Instrumentation and Measurement
Issue number2
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

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