Diode-pumped Q-switched laser with intracavity sum frequency mixing in periodically poled KTP

Chen, Yung-Fu; Chen, Y. S.; Tsai, Shi-Chun

doi:10.1007/s00340-004-1537-z

Cited by 61 publications

(40 citation statements)

References 14 publications

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“…In their approach 1.2 W of yellow light at 578 nm was generated at a repetition rate of 10 kHz. Another approach often used to reach the yellow spectral region is sum-frequency generation (SFG) of two neodymium lasers operating around 1064 nm and 1320 nm respectively [2][3][4]. Many Watts of yellow light have been generated in this way by using external cavity sum-frequency generation of two injection locked lasers [4].…”

Section: Introductionmentioning

confidence: 99%

Yellow nanosecond sum-frequency generating optical parametric oscillator using periodically poled LiNbO3

Jensen

Bruun-Larsen²,

Balle-Petersen³

et al. 2008

Appl. Phys. B

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Section: Introductionmentioning

confidence: 99%

Yellow nanosecond sum-frequency generating optical parametric oscillator using periodically poled LiNbO3

Jensen

Bruun-Larsen²,

Balle-Petersen³

et al. 2008

Appl. Phys. B

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“…Simultaneous dual-or multi-wavelength laser sources in the near-infrared spectral region have attracted increasing interest in recent years due to its wide applications in the fields of laser marking, free space optical communication, remote sensing, nonlinear optics, military, lidar, medicine, optical microscopy and especially in THz-wave difference frequency process [1][2][3][4][5]. Generally speaking, nonlinear optical frequency conversion technologies, such as optical parametric oscillator (OPO) and stimulated Raman 1 3 41 Page 2 of 7 have a smaller emission cross section and larger energy storage capacity than conventional Nd-doped crystals.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental studies on coexistent OPO and SRS from a KTiOPO4 pumped by an AO Q-switched Nd:LGGG laser

Qiao

Zhao

et al. 2016

Appl. Phys. B

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scattering (SRS), are common and propitious ways to obtain multi-wavelengths. During the past decades, various kinds of OPO operations have been investigated and it is shown that OPO technology can generate widely tunable coherent radiation [6][7][8]. As another efficient frequency conversion method, stimulated Raman scattering (SRS) has been already demonstrated and widely used for creating intense coherent radiation over the visible and near infrared [9][10][11]. In recent years, to pursue more convenient multiwavelength laser sources, the investigation by combining χ (2) and χ (3) for nonlinear frequency conversions in a same crystal has become a research hotspot. The related investigations show that the combination of χ (2) and χ (3) nonlinear frequency conversions can obtain multi-wavelengths efficiently [12][13][14][15][16][17]. As an excellent nonlinear crystal, KTi-OPO 4 (KTP) has the merits of good mechanical and optical properties, high damage threshold and possibility for noncritical phase matching. Moreover, the anisotropic Raman spectra, Raman gain coefficient and strongest Raman scattering of KTP about 2 cm/GW and 270 cm −1 have been reported [18,19]. Consequently, it has attracted a lot of attention in research field of frequency doubling, . However, up to now, the combination of OPO and SRS to obtain multi-wavelengths by using KTP as simultaneous multi-functional medium has rarely been reported. Recently, although simultaneous OPO and SRS processes from a single KTP pumped by a passively Q-switched laser were realized [24], there was no related theoretical analysis.As a derivative of Nd:Gd 3 Ga 5 O 12 (Nd:GGG) crystal, the isotropy disordered crystal Nd:LGGG has been considered as an excellent medium for the diode-pumped solid-state laser due to its good mechanical, thermal and optical properties. What is more, due to its inhomogeneous broadening absorption and emission bands [25], Nd:LGGG crystal may Abstract Coexistent intracavity KTiOPO 4 optical parametric oscillator (OPO) and stimulated Raman scattering (SRS) processes pumped by an acousto-optical Q-switched Nd:Lu x Gd 3−x Ga 5 O 12 (Nd:LGGG) laser were presented for the first time. The Stokes radiations at 1093.2/1125.8 nm and a signal wave of 1570 nm were generated. At an incident pump power of 9.25 W and pulse repetition rate of 3 kHz, the maximum output powers of 375 mW at 1570 nm and 98 mW at 1093.2/1125.8 nm were obtained for the signal wave and Stokes radiations, respectively, corresponding to a total conversion efficiency of 5.1 %. A set of coupled rate equations for coexistent OPO and SRS processes was developed, and the numerical solutions agreed with the experiment results.

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“…In addition, nonlinear birefringent crystals such as MgO-doped lithium niobate (MgO:LN) and potassium titanyl phosphate (KTP) are also important for the wavelength converters through nonlinear optics [12,13]. Therein, MgO:LN is a uniaxial birefringent crystal with two different refractive indices.…”

Section: Measurement Principlesmentioning

confidence: 99%

“…In addition, nonlinear birefringent crystals such as It is well known that a birefringent plate (BP) has been widely applied for fabrication of wave plates and polarization splitters [11]. In addition, nonlinear birefringent crystals such as MgO-doped lithium niobate (MgO:LN) and potassium titanyl phosphate (KTP) are also important for the wavelength converters through nonlinear optics [12,13]. Therein, MgO:LN is a uniaxial birefringent crystal with two different refractive indices.…”

Section: Introductionmentioning

confidence: 99%

A Birefringent-Refraction Transducer for Measuring Angular Displacement Based on Heterodyne Interferometry

Twu

Wang

2016

Applied Sciences

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Abstract:In this paper, an optical angle sensor with a birefringent transducer for measuring angular displacement based on a heterodyne interferometry is proposed. The achievable repeatability and linearity provide sufficient evidence for the practical use. As a result, a resolution of 5.8ˆ10´6 with a dynamic range of 5˝has been achieved by utilizing a KTP (potassium titanyl phosphate) plate immersed in a high refractive index oil with refractive index of 1.7.

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Diode-pumped Q-switched laser with intracavity sum frequency mixing in periodically poled KTP

Cited by 61 publications

References 14 publications

Yellow nanosecond sum-frequency generating optical parametric oscillator using periodically poled LiNbO3

Yellow nanosecond sum-frequency generating optical parametric oscillator using periodically poled LiNbO3

Theoretical and experimental studies on coexistent OPO and SRS from a KTiOPO4 pumped by an AO Q-switched Nd:LGGG laser

A Birefringent-Refraction Transducer for Measuring Angular Displacement Based on Heterodyne Interferometry

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