Theoretical and experimental research on the multi-frequency Raman converter with KGd(WO4)2 crystal

Ding, Shou-Nian; Zhang, Xingyu; Wang, Qingpu; Su, Fufang; Li, Shutao; Fan, Shuzhen; Liu, Zhaojun; Chang, Jun; Zhang, Sasa; Wang, Shumei; Liu, Yuru

doi:10.1364/opex.13.010120

Cited by 36 publications

(18 citation statements)

References 23 publications

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“…Furthermore, the strong anisotropy of stimulated-emission cross sections for the Nd 3+ :KGW crystal favors the polarized laser output, which is propitious for some applications, such as non-linear optical frequency conversion and stimulated Raman shift. Combined with the large SRS gain coefficient (3.3 cm/GW) of the KGW crystal with a Raman shift of about 901 cm À1 for incidence of laser with the EJN m polarization, a 1067 nm laser can be shifted to 1180 and 973 nm with EJN m linear polarization by Stokes and anti-Stokes SRS [7,35]. Then, it is expected that the cyan, green, and yellow laser radiation may be realized simultaneously in the same cavity by means of frequency doubling ( Table 6).…”

Section: Article In Pressmentioning

confidence: 99%

Polarized spectroscopic properties of Nd3+-doped KGd(WO4)2 single crystal

Chen¹,

Yan²,

Gong³

et al. 2007

Journal of Luminescence

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Section: Article In Pressmentioning

confidence: 99%

Polarized spectroscopic properties of Nd3+-doped KGd(WO4)2 single crystal

Chen¹,

Yan²,

Gong³

et al. 2007

Journal of Luminescence

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“…There are two optical axis: N m and N g axis, which locate under 24 and 20 degree with the a− and c-axis. 5 The p[mm]p excitation generates the 910 cm −1 frequency shift. 6 To get the pure 559 nm yellow laser, the N m axis should be along the s-polarization direction.…”

Section: Methodsmentioning

confidence: 99%

High purity efficient first Stokes Raman laser

Liu¹,

Liu

et al. 2015

SPIE Proceedings

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The subject of the solid-state Raman frequency conversion to the yellow frequency spectra has been an active topic since the mid 1990's, because of its application in bio-medical and astronomy fields. However, the yellow laser performance is often limited because of the cascade conversion to second or higher Stokes. This cascade conversion not only limits the conversion efficiency and the output power of the first Stokes, but also degrades the pulse and the beam profile of the first Stokes. We present a type of polarization coupled Raman resonator, in which the higher order ( the second Stokes and higher ) laser output can be dramatically suppressed. Our Raman resonator is pumped by a Q-switched and frequency doubled slab laser, and we can get an almost pure (P 559 /(P 559 + P 532 ) > 99%) 559 nm yellow light output with an efficiency over 39% from 532 nm to 559 nm. The resonator includes a high reflection rear mirror, a KGW crystal, a polarization coupled input/output element, and a high reflection output coupler of 559 nm (R 559 nm = 0.6). Furthermore, we have proposed an improvement of this polarization coupled Raman resonator. The theoretical calculations of the temporal and spatial dependent Raman conversion equations show that the conversion efficiency of the first order Stokes is greatly enhanced with an additional λ/2 waveplate for 589 nm and the BBO crystal.

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“…Solar Laser Systems, Minsk, Belarus). Relatively straightforward model simulations have been able to reproduce basic performance characteristics in pulsed [101] and CW [94] regimes. However, there is substantial scope for further scaling performance of these systems, and importantly the average output power.…”

Section: Article In Pressmentioning

confidence: 99%