Polarization properties and frequency stabilization of a 543-nm He-Ne laser.
نویسندگان
چکیده
منابع مشابه
Frequency doubling of He–Ne laser radiation at 632.8 nm
Second harmonic generation (SHG) obtained using a potassium dihydrogen phosphate (KDP) nonlinear crystal from a CW He–Ne laser as a pump source, which emits at 632.8 nm, is reported. The SHG efficiency at the power of the He–Ne laser utilized (18 mW) and the fundamental beam waist available (0.1 mm), was evaluated theoretically; the same efficiency was measured experimentally obtaining a value ...
متن کاملLamb-dip stabilized 543-nm He-Ne lasers and isotope shift of Ne 3s2→ 2p10 transition
Internal-mirror 543-nm He-20Ne and He-22Ne lasers are frequency-stabilized to the Lamb-dip of their tuning curves. Frequency stability of 2×10−11 and frequency resettability of 4×10−9 (or 2 MHz) are achieved. The absolute frequencies of the two lasers are determined by frequencycomparing with an iodine-stabilized 543-nm laser. The isotope shift between 20Ne and 22Ne is measured to one order of ...
متن کاملFrequency stabilization and measurements of 543 nm HeNe lasers
In this paper we report our investigations on the frequency stabilization and frequency measurements of 543 nm HeNe laser. It contains following four dierent works. (1) Using a metal laser tube we have built an iodine-stabilized 543 nm HeNe laser by the Frequency-Modulation (FM) spectroscopy. The signal-to-noise ratio of the hyper®ne spectrum reached 2 ́ 10 at 1 s sampling time. (2) We have bu...
متن کاملStabilization of internal-mirror He-Ne lasers.
Simultaneous frequency and amplitude stabilization of a commercial internal-mirror He-Ne laser by a new simple method is reported. In this method, the back beam intensity of one polarization of the orthogonally polarized modes is fed back as a heater current to control the cavity length of the laser. The relative frequency stability and amplitude stability achieved are, respectively, +2.5 X 10-...
متن کاملAnalgesic effect of He-Ne (632.8 nm) low-level laser therapy on acute inflammatory pain.
OBJECTIVE The aim of this study was to evaluate the analgesic effect of the low level laser therapy (LLLT) with a He-Ne laser on acute inflammatory pain, verifying the contribution of the peripheral opioid receptors and the action of LLLT on the hyperalgesia produced by the release of hyperalgesic mediators of inflammation. BACKGROUND DATA All analgesic drugs have undesired effects. Because o...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 1988
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.16.818