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View article: 213.4 W Continuous-Wave Diamond Raman Laser at 1240 nm with Polarization-Combined Pumping
213.4 W Continuous-Wave Diamond Raman Laser at 1240 nm with Polarization-Combined Pumping Open
View article: Experimental investigation on the effect of crystal birefringence on the performance of nanosecond-pulsed diamond Raman laser
Experimental investigation on the effect of crystal birefringence on the performance of nanosecond-pulsed diamond Raman laser Open
The impact of crystal birefringence on the performance of diamond Raman lasers has been studied previously at power levels slightly above the threshold. However, the diamond Raman lasers operating far above the threshold usually exhibit di…
View article: Low-Cost Dual-Emissive Phosphor with Ultraviolet and Visible Persistent Luminescence for Information Encryption and Advanced Anti-Counterfeiting
Low-Cost Dual-Emissive Phosphor with Ultraviolet and Visible Persistent Luminescence for Information Encryption and Advanced Anti-Counterfeiting Open
View article: Diamond guide star laser pulsed at a Larmor frequency
Diamond guide star laser pulsed at a Larmor frequency Open
We demonstrate a diamond sodium guide star laser pulsed at a Larmor repetition rate of 350 kHz. The single-frequency 589 nm laser reaches an average output power of 32.6 W with 75.6 W pump power in a duty cycle of 19%. Significant improvem…
View article: Reduction of relative intensity noise in a diamond Raman laser
Reduction of relative intensity noise in a diamond Raman laser Open
The relative intensity noise (RIN) characteristics of a continuous-wave diamond Raman laser are investigated for the first time. The results reveal the parasitic stimulated Brillouin scattering (SBS) that usually occurred with higher-order…
View article: A Linearly Polarized Wavelength-Tunable Q-Switched Fiber Laser with a Narrow Spectral Bandwidth of 112 MHz
A Linearly Polarized Wavelength-Tunable Q-Switched Fiber Laser with a Narrow Spectral Bandwidth of 112 MHz Open
A tunable and narrow-bandwidth Q-switched ytterbium-doped fiber (YDF) laser is investigated in this paper. The non-pumped YDF acts as a saturable absorber and, together with a Sagnac loop mirror, provides a dynamic spectral-filtering grati…
View article: Secondary Raman and Brillouin mode suppression in two- and three-mirror-cavity diamond Raman lasers
Secondary Raman and Brillouin mode suppression in two- and three-mirror-cavity diamond Raman lasers Open
We report an investigation into secondary mode suppression in single longitudinal mode (SLM) 1240 nm diamond Raman lasers. For a three-mirror V-shape standing-wave cavity incorporating an intra-cavity LBO crystal to suppress secondary mode…
View article: High-power free-running single-longitudinal-mode diamond Raman laser enabled by suppressing parasitic stimulated Brillouin scattering
High-power free-running single-longitudinal-mode diamond Raman laser enabled by suppressing parasitic stimulated Brillouin scattering Open
A continuous-wave (CW) single-longitudinal-mode (SLM) Raman laser at 1240 nm with power of up to 20.6 W was demonstrated in a free-running diamond Raman oscillator without any axial-mode selection elements. The SLM operation was achieved d…
View article: Modeling and characterization of high-power single frequency free-space Brillouin lasers
Modeling and characterization of high-power single frequency free-space Brillouin lasers Open
Free-space Brillouin lasers (BLs) are capable of generating high-power, narrow-linewidth laser outputs at specific wavelengths. Although there have been impressive experimental demonstrations of these lasers, there is an absence of a corre…
View article: A review of ns-pulsed Raman lasers based on diamond crystal
A review of ns-pulsed Raman lasers based on diamond crystal Open
High-power ns-pulsed lasers have been widely used in many significant applications, including laser radar, remote-sensing, biomedicine, industrial process, and military defense. Stimulated Raman scattering (SRS) provides an efficient metho…
View article: Modelling and characterisation of continuous wave resonantly pumped diamond Raman lasers
Modelling and characterisation of continuous wave resonantly pumped diamond Raman lasers Open
We present experimental results and modeling of continuous wave resonantly pumped Raman lasers. The first Stokes diamond Raman ring laser generated 0.6 W at 960 nm with an efficiency of 18%; the second Stokes laser generated 1.5 W at 1485 …
View article: Investigating single-longitudinal-mode operation of a continuous wave second Stokes diamond Raman ring laser
Investigating single-longitudinal-mode operation of a continuous wave second Stokes diamond Raman ring laser Open
We report a diamond Raman ring cavity laser resonantly pumped by a tunable Ti:sapphire continuous wave laser. We characterize the laser operation generating first Stokes output and, for the first time, generate second Stokes lasing at a ma…
View article: Fluorescence resonance energy transfer between CdTe quantum dots and copper phthalocyanine
Fluorescence resonance energy transfer between CdTe quantum dots and copper phthalocyanine Open
The fluorescence resonance energy transfer in CdTe quantum dots (QDs)-copper phthalocyanine (CuPc) is investigated by ultrafast time-resolved spectroscopy technique equipped with femtosecond laser (780 nm, 76 MHz, 130 fs). The results show…
View article: Fluorescence resonance energy transfer in a aqueous system of CdTe quantum dots and Rhodamine B with two-photon excitation
Fluorescence resonance energy transfer in a aqueous system of CdTe quantum dots and Rhodamine B with two-photon excitation Open
Fluorescence resonance energy transfer (FRET) is non-radiation energy transfer that occurs between a donor (D) molecule in an excited state and an acceptor (A) molecule in a ground state by dipole-dipole interactions. The efficiency of FRE…