Portable frequency standard at 633 nm with compact external-cavity diode laser

M. Merimaa, P. Kokkonen, Kaj Nyholm, E. Ikonen

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

A portable (32 cm × 13 cm × 6 cm) laser frequency standard has been constructed by frequency-stabilizing a miniaturized external-cavity diode laser to the Doppler-free spectrum of iodine. Compact structure is achieved using a novel transmission grating. The laser has excellent noise properties, which leads to a high signal-to-noise ratio (SNR) of detection and allows direct observation of the inverse Lamb dips. The frequency stability matches that of iodine-stabilized He-Ne lasers at 633 nm; the relative frequency stability (square root of the Allan variance) follows a slope of 7.9 × 10−12τ−1/2 (10 s < τ < 4000 s). The best stability, 1 ×10−13 (47 Hz), is reached at an integration time of τ = 4000 s. The observed day-to-day repeatability (1σ) is 4 × 10−12 (1.6 kHz). Extensive measurements were made to evaluate the dependence of the laser frequency on the various operational parameters.
Original languageEnglish
Pages (from-to)311-318
Number of pages8
JournalMetrologia
Volume38
Issue number4
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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Frequency standards
Semiconductor lasers
Frequency stability
Lasers
Iodine
Signal to noise ratio

Cite this

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title = "Portable frequency standard at 633 nm with compact external-cavity diode laser",
abstract = "A portable (32 cm × 13 cm × 6 cm) laser frequency standard has been constructed by frequency-stabilizing a miniaturized external-cavity diode laser to the Doppler-free spectrum of iodine. Compact structure is achieved using a novel transmission grating. The laser has excellent noise properties, which leads to a high signal-to-noise ratio (SNR) of detection and allows direct observation of the inverse Lamb dips. The frequency stability matches that of iodine-stabilized He-Ne lasers at 633 nm; the relative frequency stability (square root of the Allan variance) follows a slope of 7.9 × 10−12τ−1/2 (10 s < τ < 4000 s). The best stability, 1 ×10−13 (47 Hz), is reached at an integration time of τ = 4000 s. The observed day-to-day repeatability (1σ) is 4 × 10−12 (1.6 kHz). Extensive measurements were made to evaluate the dependence of the laser frequency on the various operational parameters.",
author = "M. Merimaa and P. Kokkonen and Kaj Nyholm and E. Ikonen",
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language = "English",
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pages = "311--318",
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Portable frequency standard at 633 nm with compact external-cavity diode laser. / Merimaa, M.; Kokkonen, P.; Nyholm, Kaj; Ikonen, E.

In: Metrologia, Vol. 38, No. 4, 2001, p. 311-318.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Portable frequency standard at 633 nm with compact external-cavity diode laser

AU - Merimaa, M.

AU - Kokkonen, P.

AU - Nyholm, Kaj

AU - Ikonen, E.

PY - 2001

Y1 - 2001

N2 - A portable (32 cm × 13 cm × 6 cm) laser frequency standard has been constructed by frequency-stabilizing a miniaturized external-cavity diode laser to the Doppler-free spectrum of iodine. Compact structure is achieved using a novel transmission grating. The laser has excellent noise properties, which leads to a high signal-to-noise ratio (SNR) of detection and allows direct observation of the inverse Lamb dips. The frequency stability matches that of iodine-stabilized He-Ne lasers at 633 nm; the relative frequency stability (square root of the Allan variance) follows a slope of 7.9 × 10−12τ−1/2 (10 s < τ < 4000 s). The best stability, 1 ×10−13 (47 Hz), is reached at an integration time of τ = 4000 s. The observed day-to-day repeatability (1σ) is 4 × 10−12 (1.6 kHz). Extensive measurements were made to evaluate the dependence of the laser frequency on the various operational parameters.

AB - A portable (32 cm × 13 cm × 6 cm) laser frequency standard has been constructed by frequency-stabilizing a miniaturized external-cavity diode laser to the Doppler-free spectrum of iodine. Compact structure is achieved using a novel transmission grating. The laser has excellent noise properties, which leads to a high signal-to-noise ratio (SNR) of detection and allows direct observation of the inverse Lamb dips. The frequency stability matches that of iodine-stabilized He-Ne lasers at 633 nm; the relative frequency stability (square root of the Allan variance) follows a slope of 7.9 × 10−12τ−1/2 (10 s < τ < 4000 s). The best stability, 1 ×10−13 (47 Hz), is reached at an integration time of τ = 4000 s. The observed day-to-day repeatability (1σ) is 4 × 10−12 (1.6 kHz). Extensive measurements were made to evaluate the dependence of the laser frequency on the various operational parameters.

U2 - 10.1088/0026-1394/38/4/4

DO - 10.1088/0026-1394/38/4/4

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VL - 38

SP - 311

EP - 318

JO - Metrologia

JF - Metrologia

SN - 0026-1394

IS - 4

ER -