Frequency stabilization of an internal-mirror He-Ne laser using axial-mode beat

Sasaki, Akira; Okada, Toshiyuki; Kawai, Jun; Aoyama, Hajime

doi:10.1063/1.107629

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…We did not find any qualitative difference in the mode behavior when applying homogeneous or local MF. Approximately symmetric behavior of curves 3 and 4 in (1,2) and with the applied one (3,4). Arrows show the direction of the respective mode (V or H) PP turn to the right (following to the beam).…”

Section: Resultsmentioning

confidence: 99%

Destabilizing factors in operation of short-cavity He-Ne laser

Kononchuk¹

2003

Semicond. Phys. Quantum Electron. Optoelectron.

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The influence of longitudinal manetic field (MF) on a position of polarization planes (PPs) of the main modes (λ = 0.63 µm) in dependency on the generation frequency and off-axis mode presence was investigated in this work. It was shown that mode PPs are strictly orthogonal only in their symmetrical position in the amplification contour. In other spectral ranges PP position depends on the value of cavity anisotropy and local MF. Local MF action is equivalent to that of homogeneous MF. Characteristics of axis modes (intensity, PP position, optical frequency and especially an inter-mode beating frequency) are destabilized by modes of higher orders, dynamics of which possesses a random character. Nonlinear interaction between modes and a strong dependency of their characteristics on a local MF make stabilization system reliable operation impossible, if these systems are based only on internal properties of laser emission. The high sensitivity of the polarization state to the local MF can be used for broad-band polarizational modulation of laser emission.

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Section: Resultsmentioning

confidence: 99%

Destabilizing factors in operation of short-cavity He-Ne laser

Kononchuk¹

2003

Semicond. Phys. Quantum Electron. Optoelectron.

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Frequency and power stabilization of a three longitudinal mode He-Ne laser using secondary beat frequency

Suh

Yoon

Chung

et al. 1993

Applied Physics Letters

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A method of frequency and power stabilization for an internal-mirror He-Ne laser using the secondary beat frequency between the three longitudinal modes is presented. Frequency and power fluctuation was ±1 MHz (2 parts in 109) and ±0.10% over 10 000 s, respectively. The square-root Allan variance between the laser stabilized in this study and the iodine stabilized He-Ne laser was 5×10−11 at average time of τ=1 s. Furthermore, we could obtain the output power of 2 mW in a single longitudinal mode.

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Distance measurement method using the two intermode beat frequencies of a three-longitudinal mode He–Ne laser

Eom

Kim

Suh

1997

Review of Scientific Instruments

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The frequency of a three-longitudinal mode He–Ne laser was stabilized by the method of detecting the secondary beat frequency between modes. The stabilized laser has been efficiently used as a laser source for a distance meter. In distance measurement, two intermode beat frequencies (875 MHz, 145 kHz) were, respectively, used as a modulation frequency instead of an optical modulator. The resolution of the distance meter was higher than 20 μm. The total uncertainty was within 20 μm by correction of errors except for the uncertainty of the refractive index of the air.

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Frequency stabilization of an internal-mirror He-Ne laser using axial-mode beat

Abstract: A frequency stabilization of a 633-nm internal-mirror He-Ne laser using the axial-mode beat frequency has been reported. The frequency stability achieved is 2.2 MHz (4.6×10−9) for an averaging time 1 s. The amplitude stability of this stabilized laser is 0.21%.

Cited by 4 publications

References 14 publications

Destabilizing factors in operation of short-cavity He-Ne laser

Destabilizing factors in operation of short-cavity He-Ne laser

Frequency and power stabilization of a three longitudinal mode He-Ne laser using secondary beat frequency

Distance measurement method using the two intermode beat frequencies of a three-longitudinal mode He–Ne laser

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