The single crystal of GdP 5O 14 :Sm 3+ ,Pr 3+ (GdPP:Sm,Pr) was grown by the hydrothermal method. The crystal belongs to the monoclinic space group P2 1/ C by X ray powder diffraction results. The dependence of Pr 3+ i...The single crystal of GdP 5O 14 :Sm 3+ ,Pr 3+ (GdPP:Sm,Pr) was grown by the hydrothermal method. The crystal belongs to the monoclinic space group P2 1/ C by X ray powder diffraction results. The dependence of Pr 3+ ion concentration in GdPP:Sm,Pr crystals on the emission intensity of 4 G 5/2 → 6 H 7/2 transitions of Sm 3+ ion and the energy transfer between Sm 3+ and Pr 3+ ions have been investigated and discussed.展开更多
Lasers from^(1)I_(6)to^(3)F_(4)transitions were first demonstrated in a Pr^(3+):YLF crystal by inserting a birefringent filter.Output powers up to 2.44 W,2.10 W,2.01 W,and 2.42 W were obtained at 691.7 nm,701.4 nm,705...Lasers from^(1)I_(6)to^(3)F_(4)transitions were first demonstrated in a Pr^(3+):YLF crystal by inserting a birefringent filter.Output powers up to 2.44 W,2.10 W,2.01 W,and 2.42 W were obtained at 691.7 nm,701.4 nm,705.0 nm,and 708.7 nm,respectively.Their slope efficiencies were 19.8%,16.5%,15.8%,and 19.4%,respectively.The M_(x)^(2)and M_(y)^(2)factors were measured to be 2.29and 2.03 at 691.7 nm,2.23 and 1.86 at 701.4 nm,2.31 and 2.08 at 705.0 nm,and 2.41 and 2.04 at 708.7 nm,with corresponding power fluctuations of less than 5.3%,5.6%,5.8%,and 2.9%.展开更多
We report continuous-wave deep red lasers at 696.6 and 698.6 nm in a Pr^(3+):YLF crystal pumped by an InGaN laser diode.A Lyot filter was inserted into the cavity as a birefringent filter to select wavelength;the lase...We report continuous-wave deep red lasers at 696.6 and 698.6 nm in a Pr^(3+):YLF crystal pumped by an InGaN laser diode.A Lyot filter was inserted into the cavity as a birefringent filter to select wavelength;the lasers at 696.6 and 698.6 nm were obtained with a maximum output power of 1.36 and 3.11 W,separately.To the best of our knowledge,the output powers of these two lasers are the highest to date,and this is the first scaling of the output power of the Pr^(3+):YLF laser to the watt level at around 696 nm.In addition,the corresponding theoretical analysis and simulation were carried out to explain the experimental phenomena.展开更多
High-power continuous-wave ultraviolet lasers are useful for many applications.As ultraviolet laser sources,the wavelength switching capability and compact structure are very important to extend the applicability and ...High-power continuous-wave ultraviolet lasers are useful for many applications.As ultraviolet laser sources,the wavelength switching capability and compact structure are very important to extend the applicability and improve the flexibility in practical applications.In this work,we present two simple and relatively compact schemes by laser diode pumping to obtain a watt-level single-wavelength 348.7-nm laser and discrete wavelength tunable ultraviolet lasers around 349 nm(from 334.7 to 364.5 nm)by intracavity frequency doubling based on Pr^(3+):YLF andβ-BBO crystals.The maximum output power of the single-wavelength 348.7-nm laser is 1.033 W.The output powers of the discrete wavelength tunable lasers are at the level of tens of milliwatts,except for two peaks at 348.7 and 360.3 nm with output powers of approximately 500 mW.In addition,simulations are carried out to explain the experimental results and clarify the tuning mechanisms.展开更多
文摘The single crystal of GdP 5O 14 :Sm 3+ ,Pr 3+ (GdPP:Sm,Pr) was grown by the hydrothermal method. The crystal belongs to the monoclinic space group P2 1/ C by X ray powder diffraction results. The dependence of Pr 3+ ion concentration in GdPP:Sm,Pr crystals on the emission intensity of 4 G 5/2 → 6 H 7/2 transitions of Sm 3+ ion and the energy transfer between Sm 3+ and Pr 3+ ions have been investigated and discussed.
基金supported by the National Natural Science Foundation of China(NSFC)(No.61975168)the National Key Research and Development Program of China(No.2020YFC2200400)。
文摘Lasers from^(1)I_(6)to^(3)F_(4)transitions were first demonstrated in a Pr^(3+):YLF crystal by inserting a birefringent filter.Output powers up to 2.44 W,2.10 W,2.01 W,and 2.42 W were obtained at 691.7 nm,701.4 nm,705.0 nm,and 708.7 nm,respectively.Their slope efficiencies were 19.8%,16.5%,15.8%,and 19.4%,respectively.The M_(x)^(2)and M_(y)^(2)factors were measured to be 2.29and 2.03 at 691.7 nm,2.23 and 1.86 at 701.4 nm,2.31 and 2.08 at 705.0 nm,and 2.41 and 2.04 at 708.7 nm,with corresponding power fluctuations of less than 5.3%,5.6%,5.8%,and 2.9%.
基金supported by the National Natural Science Foundation of China(No.61975168)。
文摘We report continuous-wave deep red lasers at 696.6 and 698.6 nm in a Pr^(3+):YLF crystal pumped by an InGaN laser diode.A Lyot filter was inserted into the cavity as a birefringent filter to select wavelength;the lasers at 696.6 and 698.6 nm were obtained with a maximum output power of 1.36 and 3.11 W,separately.To the best of our knowledge,the output powers of these two lasers are the highest to date,and this is the first scaling of the output power of the Pr^(3+):YLF laser to the watt level at around 696 nm.In addition,the corresponding theoretical analysis and simulation were carried out to explain the experimental phenomena.
基金supported by the National Natural Science Foundation of China(NSFC)(No.61975168)
文摘High-power continuous-wave ultraviolet lasers are useful for many applications.As ultraviolet laser sources,the wavelength switching capability and compact structure are very important to extend the applicability and improve the flexibility in practical applications.In this work,we present two simple and relatively compact schemes by laser diode pumping to obtain a watt-level single-wavelength 348.7-nm laser and discrete wavelength tunable ultraviolet lasers around 349 nm(from 334.7 to 364.5 nm)by intracavity frequency doubling based on Pr^(3+):YLF andβ-BBO crystals.The maximum output power of the single-wavelength 348.7-nm laser is 1.033 W.The output powers of the discrete wavelength tunable lasers are at the level of tens of milliwatts,except for two peaks at 348.7 and 360.3 nm with output powers of approximately 500 mW.In addition,simulations are carried out to explain the experimental results and clarify the tuning mechanisms.
