Research of Automatic Frequency Stability Diode Laser

Yin, 张胤 Zhang; Qing, 王青 Wang

doi:10.3788/cjl201441.0602001b

Cited by 2 publications

(1 citation statement)

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“…As we know, resonance cavity length plays the leading role to determine the output signal power and wavelength of laser diode [8]. Aimed at the shortcomings that inner cavity length of laser diode is too short, this paper chooses an ECDL laser, namely the external cavity semiconductor lasers.…”

Section: Cavity Length Tuning Experimental Systemmentioning

confidence: 99%

Research on the signal of 4He pump magnetometer sensor using ECDL laser

Wang¹,

Zhou²,

Cheng³

2018

biomedicalresearch

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One of the most important factors determines specifications of 4 He optically pumped magnetometer is the quality of resonance signal given by sensor probe. This paper introduces a laser 4 He optically pumped magnetometer using an ECDL laser. An external cavity length tuning system of ECDL laser based on the double light path atom saturated absorption spectrum method with a 4 He cell is build up to ensure that an effective 1083.207 nm laser light source is provided for the magnetometer probe. It is designed a double path photoelectric detector to get the absorption peak signal by the difference technology. Because signal in accordance with Lorentz linear features, a detection method combined with first and second derivative of signal curve is proposed. Join a modulation signal whose form is dc component add sinusoidal component, the system make ECDL laser give a stable output wavelength around 1083.207 nm. With the laser light, a resonance signal with better quality than the 4 He optically pumped magnetometer probe using the gas discharge lamp light source is given.

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Section: Cavity Length Tuning Experimental Systemmentioning

confidence: 99%