cw dual-wavelength operation of a diode-end-pumped Nd:YVO 4 laser

Chen, Yung-Fu

doi:10.1007/s003400050847

Cited by 172 publications

(73 citation statements)

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“…One side of the laser crystals were coated high-transmission (HT) at 808 nm (T499.8%) and high-reflection (HR) at 1342 nm (R499.8%) and the other side were HT at 1342 nm (T499.9%). In addition, considering that the stimulated emission cross-section at 1342 nm (7.6 Â 10 À19 cm 2 ) is estimated to be $30% of that at 1064 nm (25 Â 10 À19 cm 2 ) and quantum efficiency at 1342 nm is also lower than that at 1064 nm, the HR coating of the laser crystals were also of low reflectance near 1064 nm to avoid laser oscillation at this wavelength [8]. In order to decrease the influence of the thermal effects, the laser crystals were wrapped with indium foil and mounted in a semiconductor cooled copper blocks.…”

Section: Experiments Setupmentioning

confidence: 98%

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

Jin

Chen

et al. 2010

Optik

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Section: Experiments Setupmentioning

confidence: 98%

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

Jin

Chen

et al. 2010

Optik

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“…For a four-level Nd-doped crystal laser, there are three primary lasing wavelengths, 0.9, 1.064 and 1.34 μm corresponding to the transition of 4 F3/2→ 4 I9/2, 4 F3/2→ 4 I11/2, and 4 F3/2→ 4 I13/2 [1]. Because these wavelengths share the same upper-level state, simultaneous multiple-wavelength lasing can be implemented in Nd-doped laser systems including Nd:YAlO3 [2][3][4], Nd:YVO4 [5], Nd:GdVO4 [6], Nd:YAG [7], and Nd:LuVO4 [8,9]. Simultaneously dual-wavelength lasing can be analyzed by rate equations which were extended to dual-transition at the same upper energy level and wasted the same population inversion in pulse pumping laser [10].…”

Section: Introductionmentioning

confidence: 98%

“…Due to consume the same upper energy level, there will be energy competitive behavior between dual-wavelength lasing regime. In a Nd-doped laser, adjusting both 1.064 and 1.342 μm cavity modes can reduce the competitive interaction and optimize dual-wavelength emission simultaneously [5]. The required loss at 1.06 μm can be calculated to avoid 1.06 μm oscillated and wavelength at 0.946 μm was made to oscillate from quasi-three level and 1.06 μm loss calculation model [11].…”

Section: Introductionmentioning

confidence: 99%

Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO₄laser with an intracavity periodically poled lithium niobate Bragg modulator

2014

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This study demonstrates hysteresis loop and pattern formation in a Nd:YVO4 laser at 1064nm ( 4 F3/2→ 4 I11/2) and 1342nm ( 4 F3/2→ 4 I13/2) with an intracavity electro-optic periodically poled lithium niobate (EO PPLN) Bragg modulator by using a T-type cavity configuration. Based on these dual wavelengths sharing population inversion in the same upper energy level to lase, the transmission, Tp, of EO PPLN was chosen as the controlling parameter to explore the dynamics of dualwavelength competition. A hysteresis loop occurred when the extracting efficiencies of dual wavelength were near equivalent. When the pump power was 9.0 W, the hysteresis loop was observed in the region of the transmission of PPLN between Tp=64.88% to Tp=84.47%. The slope efficiencies were 25.96 and 3.92% and the thresholds were 2.5 and 3.5 W for the wavelengths of 1064 and 1342 nm, respectively. The width of the hysteresis loop increased when the pump power increased. Moreover, the hysteresis loop accompanied with the variation of the pattern formation. A high-order transvers mode was easily observed at 1342 nm light, but a simple spot existed for 1064 nm light. Apparently, the role of gain competition is worthy to deeply explore.

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“…This is due to the need for such sources in application like generation of coherent terahertz (THz) waves [2][3][4], generation of ultrahigh pulse repetition rates by optical beating [5], optical communication [6,7], remote sensing [8], digital holographic microscopy [9], laser ranging [10], and coherent anti-Stokes Raman scattering microscopy [11]. Simultaneous dual/tri-wavelength laser operation have been shown in many solid state laser gain media including Nd:YAG [1,12], Nd:CNGG [13], Nd:CLTGG [14], Nd:YVO4 [15], Nd:GdVO4 [16], Nd:GGG [17], Nd:YAlO3 [18], Nd:NGAB [19], Yb:YAG [20], Tm:YAP [21], Cr:LiCAF [22], Cr:LiSAF [23], Alexandrite [24], Tm:CaYAlO 4 [25], Tm:Ho:Er:YAG [1], and Ti:Sapphire [26]. Most of these systems report dual/triple wavelength operation in a few pairs of lines.…”

Section: Introductionmentioning

confidence: 99%

Multicolor lasers using birefringent filters: experimental demonstration with Cr:Nd:GSGG and Cr:LiSAF

Demırbas¹,

Uecker²,

Fujimoto³

et al. 2017

Opt. Express

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Abstract:In this study, we numerically and experimentally investigate application of birefringent filters (BRFs) as frequency selective elements in multicolor lasers. A BRF plate made out of crystalline quartz with an arbitrarily oriented optical axis has been explored. Simulation results have shown that compared to regular BRFs where the optical axis lies in the plane of the plates surface, a BRF with an optical axis pointing out of its surface enables design flexibility in filter parameters, providing access to a wider set of free spectral range and bandwidth values. As a result, multicolor operation could be obtained in many wavelength pairs using a single BRF plate. In the experiments a 3-mm thick quartz BRF with an optical axis 45° to the surface plane has been used. With Cr:Nd:GSGG as a laser medium two-color and three-color cw laser operation has been demonstrated in 11 and 3 different transition combinations, respectively. Moreover, two-color laser operation has been demonstrated in 10 different wavelength pairs in Cr:LiSAF. To our knowledge, this study is the first detailed investigation and experimental demonstration of BRFs with tilted optical axis for multicolor operation of solid-state lasers. Compared to other methods, BRFs enable a rich selection of transition pairs and also the ratio of the power in each line could be regulated by fine adjustment of the rotation angle. Implementation of tilted-axis BRFs should boost development of efficient and low-cost multicolor lasers in other gain media as well. 449-451 (1997). 6. S. Pan, X. Zhao, and C. Lou, "Switchable single-longitudinal-mode dual-wavelength erbium-doped fiber ring laser incorporating a semiconductor optical amplifier," Opt. Lett. 33(8), 764-766 (2008). 7. C. W. Chow, C. S. Wong, and H. K. Tsang, "All-optical NRZ to RZ format and wavelength converter by dualwavelength injection locking," Opt. Commun. 209(4-6), 329-334 (2002). 7231-7242 (2007). 10. J. B. Abshire, "Pulsed multiwavelength laser ranging system for measuring atmospheric delay," Appl. Opt.19 ( 202-208 (1985). 33. S. Zhu, "Birefringent filter with tilted optic axis for tuning dye lasers: theory and design," Appl. Opt. 29(3), 410-415 (1990). 34. X. Wang and J. Yao, "Transmitted and tuning characteristics of birefringent filters," Appl. Opt. 31(22), 4505-4508 (1992). 35. H. Wu, C. Zhang, and X. Bai, "A complete description of polarization and transmission of nonnormal incident rays in a uniaxial birefringent plate with arbitrary optic axis," Opt. Commun. 283(21), 4129-4134 (2010).

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cw dual-wavelength operation of a diode-end-pumped Nd:YVO 4 laser

Cited by 172 publications

References 0 publications

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO₄laser with an intracavity periodically poled lithium niobate Bragg modulator

Multicolor lasers using birefringent filters: experimental demonstration with Cr:Nd:GSGG and Cr:LiSAF

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cw dual-wavelength operation of a diode-end-pumped Nd:YVO 4 laser

Cited by 172 publications

References 0 publications

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

High-power continuous-wave doubly resonant all-intracavity sum-frequency mixing deep blue laser at 447 nm

Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO4laser with an intracavity periodically poled lithium niobate Bragg modulator

Multicolor lasers using birefringent filters: experimental demonstration with Cr:Nd:GSGG and Cr:LiSAF

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Hysteresis loop and pattern from the dual-wavelength competition in an Nd:YVO₄laser with an intracavity periodically poled lithium niobate Bragg modulator