On the design of enhancement cavities for second harmonic generation

Freegarde, Tim; Zimmermann, C.

doi:10.1016/s0030-4018(01)01584-x

Cited by 17 publications

(7 citation statements)

References 24 publications

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“…It is as small as possible to limit the astigmatism caused by the tilted curved mirrors. This geometry leads to a circular beam waist inside the crystal of 35 µm as calculated by ABCD matrix formalism [21] that is close to the optimal value for the Boyd-Kleinman factor.…”

Section: Methodssupporting

confidence: 57%

Efficient frequency doubling at 399 nm

et al. 2014

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Section: Methodssupporting

confidence: 57%

Efficient frequency doubling at 399 nm

et al. 2014

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“…This can be obtained by second-harmonic generation ͑SHG͒ in an external enhancement cavity containing a nonlinear crystal, where a cw titanium:sapphire ͑Ti:S͒ laser provides the fundamental frequency. 4,5 SHG in an external enhancement cavity forms the basis of the laser setup used in our laboratory ͑see Ref. 6 and references therein͒.…”

Section: Introductionmentioning

confidence: 99%

High-power frequency-stabilized laser for laser cooling of metastable helium at 389 nm

Koelemeij

Hogervorst

Vassen

2005

Review of Scientific Instruments

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A high-power, frequency-stabilized laser for cooling of metastable helium atoms using the 2 3 S 1 → 3 3 P 2 transition at 389 nm has been developed. The 389 nm light is generated by frequency doubling of a titanium:sapphire laser in an external enhancement cavity containing a lithiumtriborate nonlinear crystal. With a maximum conversion efficiency of 75%, 1 W of useful 389 nm power is produced out of 2 W at 778 nm. While being stabilized to the 2 3 S 1 → 3 3 P 2 transition, the 389 nm frequency is tunable over ±150 MHz with respect to the field-free atomic resonance frequency. This is accomplished by Zeeman tuning of the absorption lines used in the frequency-stabilization scheme. The setup for saturated absorption spectroscopy in an rf discharge cell, used to stabilize the 389 nm laser to the atomic transition, is described in detail.

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“…Relation (5) for the optimum ξ = 2.84 is equivalent with obtaining a beam waist of 28 μm in the middle of the crystal. Using the ray transfer matrix analysis [20] we designed a bow tie resonator that allows us to fit the oven with the crystal in the middle of the short arm and to obtain the required beam waist in the middle of the crystal (see Fig. 5).…”

Section: Methodsmentioning

confidence: 99%

Towards sympathetic cooling of trapped ions with laser-cooled Mg + ions for mass spectrometry and laser spectroscopy

et al. 2010

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Sympathetic cooling by laser cooled Mg ions has been proposed as a method for fast cooling of highly charged ions to a very low temperature. The paper describes the construction of the solid state laser system at 279.63 nm required for laser cooling of the Mg ions. The laser system is composed of a fiber laser at 1,118.54 nm and two successive second harmonic generation (SHG) ring cavities for frequency quadrupling. In the first SHG cavity, non-critical phase matching of a lithium triborate (LBO) crystal is used for doubling from 1,118.54 to 559.27 nm. The second SHG cavity uses critical phase matching of a β-barium borate (BBO) crystal for doubling from 559.27 to 279.63 nm. With the aid of Boyd-Kleinmann theory, optimum experimental parameters are calculated and used for an efficient SHG. Besides this, the paper intends to be a shortcut for practical applications of the Boyd-Kleinmann theory for SHG.

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On the design of enhancement cavities for second harmonic generation

Abstract: Enhancement cavities using o -axis spherical mirrors allow the elliptical Gaussian beams from semiconductor diode lasers to be matched directly to the optimum beam pro®le for frequency conversion in a nonlinear crystal. We give a general recipe for the design of such cavities. Ó

Cited by 17 publications

References 24 publications

Efficient frequency doubling at 399 nm

Efficient frequency doubling at 399 nm

High-power frequency-stabilized laser for laser cooling of metastable helium at 389 nm

Towards sympathetic cooling of trapped ions with laser-cooled Mg + ions for mass spectrometry and laser spectroscopy

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