High-power femtosecond mid-IR sources for s-SNOM applications

被引：27

作者：

Hegenbarth, R. ^{[1
,2
]}

Steinmann, A. ^{[1
,2
]}

Mastel, S. ^{[3
,4
]}

Amarie, S. ^{[4
]}

Huber, A. J. ^{[4
]}

Hillenbrand, R. ^{[3
,5
]}

Sarkisov, S. Y. ^{[6
]}

Giessen, H. ^{[1
,2
]}

机构：

[1] Univ Stuttgart, Inst Phys 4, D-70550 Stuttgart, Germany

[2] Univ Stuttgart, Res Ctr SCoPE, D-70550 Stuttgart, Germany

[3] CIC NanoGUNE Consolider, E-20018 Donostia San Sebastian, Spain

[4] Neaspec GmbH, D-82152 Planegg, Germany

[5] Basque Fdn Sci, Ikerbasque, E-48011 Bilbao, Spain

[6] Natl Res Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia

来源：

JOURNAL OF OPTICS | 2014年 / 16卷 / 09期

关键词：

nonlinear optics; difference frequency generation; optical parametric oscillators; DIFFERENCE-FREQUENCY-GENERATION; OPTICAL PARAMETRIC OSCILLATOR; MU-M; REPETITION-RATE; COMB; SCATTERING; LASER;

D O I：

10.1088/2040-8978/16/9/094003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate two high-power femtosecond mid-infrared (mid-IR) sources that can be combined with a scattering-type scanning near-field optical microscope (s-SNOM). The first one is based on difference frequency generation (DFG) between the two signal wavelengths of a high-power dual-signal-wavelength periodically poled lithium niobate (PPLN) optical parametric oscillator (OPO) and covers the spectral range from 10.5 mu m to 16.5 mu m. The second one is an AgGaSe2 OPO pumped by the PPLN OPO. With this mid-IR OPO we obtained up to 113 mW average idler power at 4857 nm with more than 40 cm(-1) FWHM spectral width. We demonstrate mid-IR near-field spectra and near-field images that we obtained by combining the broadband femtosecond mid-IR DFG source with an s-SNOM.

引用

页数：7

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