Second harmonic generation of the output of an AlGaAs diode oscillator amplifier system in critically phase matched LiB3O5 and β-BaB2O4

Beier, B.; Woll, D.; Scheidt, M.; Boller, K.-J.; Wallenstein, R.

doi:10.1063/1.119559

Cited by 40 publications

(16 citation statements)

References 11 publications

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“…Alternative widely used materials are LiB 3 O 5 (LBO) or β-BaB 2 O 4 (BBO) [11,12,13] but the low nonlinear coefficients of oxoborate crystals (d eff ≤ 1 pm/V) are not suited to the frequency conversion of low power sources because it requires a tight control of the round-trip intracavity loss down to ≤ 1%. Recently, we employed a critically phase-matched KTP in a doubly-resonant sum-frequency generation (SFG) of a Nd:YAG laser and a low-power AlGaAs diode laser at 813 nm to produce 120 mW of 461 nm light, but the conversion efficiency (η < 30%) was limited by the strong power imbalance of the two pump sources [14].…”

Section: Introductionmentioning

confidence: 99%

75%-Efficiency blue generation from an intracavity PPKTP frequency doubler

Targat

Zondy

Lemonde

2005

Optics Communications

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We report on a high-efficiency 461 nm blue light conversion from an external cavityenhanced second-harmonic generation of a 922 nm diode laser with a quasi-phasematched KTP crystal (PPKTP). By choosing a long crystal (L C = 20 mm) and twice looser focusing (w 0 = 43 µm) than the "optimal" one, thermal lensing effects due to the blue power absorption are minimized while still maintaining near-optimal conversion efficiency. A stable blue power of 234 mW with a net conversion efficiency of η = 75% at an input mode-matched power of 310 mW is obtained. The intracavity measurements of the conversion efficiency and temperature tuning bandwidth yield an accurate value d 33 (461 nm) = 15 (±5%) pm/V for KTP and provide a stringent validation of some recently published linear and thermo-optic dispersion data of KTP.

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Section: Introductionmentioning

confidence: 99%

75%-Efficiency blue generation from an intracavity PPKTP frequency doubler

Targat

Zondy

Lemonde

2005

Optics Communications

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“…In BBO 220 mW at 390 nm [6] has been demonstrated with the use of an external cavity tapered amplifier, employing grating feedback and etalon stabilization. In LBO 98 mW at 403 nm were obtained [7] using a MOPA diode laser system based on a tapered amplifier.…”

Section: Introductionmentioning

confidence: 99%

High power 404 nm source based on second harmonic generation in PPKTP of a tapered external feedback diode laser

Lundeman¹,

Jensen²,

Andersen³

et al. 2008

Opt. Express

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Abstract:We present results on a 404 nm laser system based on second harmonic generation in a new compact external cavity configuration. We obtain a stable 318 mW cw diffraction limited output from the system with a mode-matched pump power of 630 mW. We observe up to 620 mW SHG, when the cavity is operating in scanning mode. The pump source is an external cavity grating feedback tapered diode laser operating at 808 nm. We find that thermal effects in the nonlinear crystal severely limit the efficiency of the setup with high input powers.

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“…For further stabilization, a Hänsch-Couillaud locking scheme was used to adjust the SHG cavity length. With a fundamental pump power of 380 mW, blue light at a wavelength of 403 nm with output powers of up to 98 mW was generated [154].…”

Section: Resonator Enhanced Shgmentioning

confidence: 99%

Blue‐green light generation using high brilliance edge emitting diode lasers

Jechow¹,

Menzel

Paschke

et al. 2010

Laser & Photonics Reviews

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A review about second harmonic generation using edge emitting diode lasers and nonlinear crystals to obtain laser radiation in the blue-green spectral range is presented. Therefore, pump laser radiation with high brightness and narrow bandwidth is necessary. Thus, this review gives an overview of the advances made with distributed feedback and Bragg reflector lasers, tapered lasers and amplifiers as well as external cavity diode lasers and master oscillator power amplifier schemes to achieve high brilliance emission. Since periodically poled materials have enabled high second harmonic conversion efficiencies with low and moderate pump powers, the review is focused on frequency doubling using those materials. The most commonly used materials, their properties and limitations are discussed briefly. Single pass and resonant SHG setups with waveguide and bulk nonlinear crystals are discussed and an emphasis on building compact and integrated devices is made. PPLN waveguide crystal pumped by a DFB laser (above). Integrated SHG device on a CCP heatsink (below).

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Second harmonic generation of the output of an AlGaAs diode oscillator amplifier system in critically phase matched LiB3O5 and β-BaB2O4

Cited by 40 publications

References 11 publications

75%-Efficiency blue generation from an intracavity PPKTP frequency doubler

75%-Efficiency blue generation from an intracavity PPKTP frequency doubler

High power 404 nm source based on second harmonic generation in PPKTP of a tapered external feedback diode laser

Blue‐green light generation using high brilliance edge emitting diode lasers

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