SRS in di‐glycine nitrate (NH2CH2COOH)2 · HNO3 crystals: Observation of high‐gain many‐phonon nonlinear interactions1. Issue 1 (19th September 2012)

• Record Type: Journal Article
• Authors: Kaminskii, Alexander A.; Lux, Oliver; Haussühl, Eiken; Rhee, Hanjo; Haussühl, Siegfried; Eichler, Hans Joachim; Yoneda, Hitoki; Shirakawa, Akira; Ueda, Ken‐ichi; Hanuza, Jerzy
• Is Part Of: Physica status solidi. Volume 250:Issue 1(2013:Jan.)
• Page Start: 169
• Page End: 179
• Publication Date: 2012-09-19
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201248273
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Efficient high‐gain many‐phonon steady‐state stimulated Raman scattering (SRS) was excited in the novel χ⁽³⁾‐active organic crystal of di‐glycine nitrate (DGN), (NH₂CH₂COOH)₂ · HNO₃, at room temperature under picosecond laser pumping in the visible and near‐IR regions. Besides high‐order Stokes and anti‐Stokes (comb) generation in this centrosymmetric crystal, several cascaded and cross‐cascaded χ⁽³⁾ ↔ χ⁽³⁾ nonlinear photon–phonon interactions were observed. The recorded Raman‐induced lasing wavelengths were identified and attributed to the SRS‐promoting optical vibration modes <italic>ω</italic>_SRS1 ≈ 1058 cm⁻¹, <italic>ω</italic>_SRS2 ≈ 2985 cm⁻¹, <italic>ω</italic>_SRS3 ≈ 895 cm⁻¹, and <italic>ω</italic>_SRS4 ≈ 3000 cm⁻¹. The measured large Raman frequency shifts (≈3000 cm⁻¹) and estimated moderately high steady‐state Raman gain coefficients (<tex-math notation="tex"><![CDATA[$g_{{\rm ssR}}^{{\rm St}_{1} } $]]></tex-math><inline-graphic xlink:href="ark:/27927/pgg1nbntgzg" mimetype="image" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /> ≥ 6.5 cm · GW⁻¹) make this DGN crystal attractive for a number of new applications in modern laser physics and nonlinear optics.</p> </abstract>