dorsal/arxiv
View Schema75%-efficiency blue generation from an intracavity PPKTP frequency doubler
| Authors | Rodolphe Le Targat, Jean-Jacques Zondy, Pierre Lemonde |
|---|---|
| Categories | |
| ArXiv ID | physics/0408031 |
| URL | https://arxiv.org/abs/physics/0408031 |
| DOI | 10.1016/j.optcom.2004.11.081 |
Abstract
We report on a high-efficiency 461 nm blue light conversion from an external cavity-enhanced second-harmonic generation of a 922 nm diode laser with a quasi-phase-matched KTP crystal (PPKTP). By choosing a long crystal (LC=20 mm) and twice looser focusing (w0=43 $\mu$m) 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 eta=75% at an input mode-matched power of 310 mW is obtained. The intra-cavity measurements of the conversion efficiency and temperature tuning bandwidth yield an accurate value d33(461 nm)=15 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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"abstract": "We report on a high-efficiency 461 nm blue light conversion from an external\ncavity-enhanced second-harmonic generation of a 922 nm diode laser with a\nquasi-phase-matched KTP crystal (PPKTP). By choosing a long crystal (LC=20 mm)\nand twice looser focusing (w0=43 $\\mu$m) than the \"optimal\" one, thermal\nlensing effects due to the blue power absorption are minimized while still\nmaintaining near-optimal conversion efficiency. A stable blue power of 234 mW\nwith a net conversion efficiency of eta=75% at an input mode-matched power of\n310 mW is obtained. The intra-cavity measurements of the conversion efficiency\nand temperature tuning bandwidth yield an accurate value d33(461 nm)=15 pm/V\nfor KTP and provide a stringent validation of some recently published linear\nand thermo-optic dispersion data of KTP.",
"arxiv_id": "physics/0408031",
"authors": [
"Rodolphe Le Targat",
"Jean-Jacques Zondy",
"Pierre Lemonde"
],
"categories": [
"physics.optics"
],
"doi": "10.1016/j.optcom.2004.11.081",
"title": "75%-efficiency blue generation from an intracavity PPKTP frequency doubler",
"url": "https://arxiv.org/abs/physics/0408031"
},
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