scholarly journals Broadband and Triple-Wavelength Continuous Wave Orange Laser by Single-Pass Sum-Frequency Generation in Step-Chirped MgO:PPLN

2018 ◽  
Vol 8 (9) ◽  
pp. 1657 ◽  
Author(s):  
Guangwei Li ◽  
Dismas Choge ◽  
Huaixi Chen ◽  
Yibin Xu ◽  
Lei Guo ◽  
...  
Keyword(s):  
Output Power ◽  
Continuous Wave ◽  
Maximum Output Power ◽  
Sum Frequency Generation ◽  
Laser Source ◽  
Maximum Output ◽  
Periodically Poled ◽  
Sum Frequency ◽  
Single Pass ◽  
Frequency Generation

We have demonstrated sum-frequency generation of a compact continuous-wave orange laser in a step-chirped magnesium oxide doped periodically poled lithium niobate in single-pass mode. A 974 nm laser diode was mixed with a C-band amplified spontaneous emission laser source to yield a triple-wavelength operation at 594.9, 596.9, and 598.6 nm with a maximum output power of 9.3 mW and broad bandwidth of ~4.4 nm. The triple-wavelength output power stability was ~2.5% in 30 min. This technique provides a path to generate broadband laser sources at shorter wavelengths which are potentially useful for biomedical and spectroscopic applications.

scholarly journals A Wavelength Tunable CW Orange-red Laser Source Based on Magnesium Oxide-doped Periodically-poled LiNbO3 in an Intracavity Sum-frequency Generation

2020 ◽  
Vol 26 (4) ◽  
pp. 381-386
Author(s):  
Yang BAI ◽  
Jianlin LI ◽  
Guangzhi LEI ◽  
Lei HOU ◽  
Rongwei ZHA ◽  
...  
Keyword(s):  
Magnesium Oxide ◽  
Continuous Wave ◽  
Sum Frequency Generation ◽  
Laser Source ◽  
Periodically Poled ◽  
Sum Frequency ◽  
Wavelength Tunable ◽  
Ppln Crystal ◽  
Signal Light ◽  
Frequency Generation

A watt-level continuous wave (CW) orange-red laser with wavelength tunable properties is experimentally implemented based on sum-frequency generation (SFG) in a composite cavity. The cavity is composed of an 880 nm laser diode (LD) side-pumped Nd: GdVO4 p-polarized 1062.9 nm cavity and a single-resonant optical parametric oscillator (SRO) of signal light using a magnesium oxide-doped periodically-poled LiNbO3 (MgO: PPLN) crystal with a poling period of 29.1 μm. In the overlap region of the two cavities, orange-red laser is generated by using a type-II critical phase-matched potassium titanyl phosphate crystal (KTP) crystal. In the temperature tuning range of the MgO: PPLN crystal (from 30 °C to 200 °C), the CW orange-red laser beams are generated in a tunable waveband from 612.24 nm to 620.72 nm (Δλ = 8.48 nm), corresponding to the mid-infrared idler light is also obtained with tunable wavelength from 4027.5 nm to 3708.2 nm (Δλ = 319.3 nm). At the lowest tuning temperature of 30 °C, the maximum CW output power of the orange-red laser at 612.24 nm and the idler light at 4027.5 nm are obtained, which are 1.145 W and 2.83 W, respectively.

A 7.5 W quasi-continuous-wave sodium D2 laser generated from single-pass sum-frequency generation in LBO crystal

2010 ◽  
Vol 102 (4) ◽  
pp. 781-787 ◽  
Author(s):  
S. Xie ◽  
Y. Bo ◽  
J. Xu ◽  
Y. Shen ◽  
P. Wang ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Single Pass ◽  
Lbo Crystal ◽  
Frequency Generation

LD-pumped high-power continuous-wave Pr3+:YLF deep red lasers at 718.5 and 720.8 nm

Laser Physics ◽  
2021 ◽  
Vol 32 (2) ◽  
pp. 025801
Author(s):  
Xiangrui Liu ◽  
Zhuang Li ◽  
Chengkun Shi ◽  
Bo Xiao ◽  
Run Fang ◽  
...  
Keyword(s):  
Output Power ◽  
High Power ◽  
Slope Efficiency ◽  
Laser Emission ◽  
Continuous Wave ◽  
Optical Glass ◽  
Maximum Output Power ◽  
Glass Plate ◽  
Maximum Output ◽  
First Time

Abstract We demonstrated 22 W LD-pumped high-power continuous-wave (CW) deep red laser operations at 718.5 and 720.8 nm based on an a-cut Pr3+:YLF crystal. The output power of both polarized directions reached the watt-level without output power saturation. A single wavelength laser operated at 720.8 nm in the π-polarized direction was achieved, with a high output power of 4.5 W and high slope efficiency of approximately 41.5%. To the best of our knowledge, under LD-pumped conditions, the laser output power and slope efficiency are the highest at 721 nm. By using a compact optical glass plate as an intracavity etalon, we suppressed the π-polarized 720.8 nm laser emission. And σ-polarized single-wavelength laser emission at 718.5 nm was achieved, with a maximum output power of 1.45 W and a slope efficiency of approximately 17.8%. This is the first time that we have achieved the σ-polarized laser emission at 718.5 nm generated by Pr3+:YLF lasers.

scholarly journals Continuous-Wave and Passively Q-Switched Er:Y2O3 Ceramic Laser at 2.7 μm

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Zhipeng Qin ◽  
Guoqiang Xie ◽  
Jian Zhang ◽  
Jingui Ma ◽  
Peng Yuan ◽  
...  
Keyword(s):  
Output Power ◽  
Continuous Wave ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Average Output ◽  
Semiconductor Saturable Absorber ◽  
Infrared Spectral ◽  
Maximum Average Output Power ◽  
Ceramic Laser ◽  
Stable Passive

We report on a continuous-wave (CW) and passively Q-switched Er:Y2O3 ceramic laser in mid-infrared spectral region. In the CW regime, a maximum output power of 2.07 W is achieved at 2717.3 nm with a slope efficiency of 13.5%. Stable passive Q-switching of the Er:Y2O3 ceramic laser is demonstrated based on semiconductor saturable absorber mirror. Under an absorbed pump power of 12.4 W, a maximum average output power of 223 mW is generated with a pulse energy of 1.7 μJ and a pulse width of 350 ns at 2709.3 nm.

Dispersion engineered sum-frequency generation in a periodically poled thin-film LiNbO3 nanowaveguide

2021 ◽  
Author(s):  
Pawan Kumar ◽  
Mohammadreza Younesi ◽  
Sina Saravi ◽  
Thomas Pertsch ◽  
Frank Setzpfandt
Keyword(s):  
Thin Film ◽  
Sum Frequency Generation ◽  
Periodically Poled ◽  
Sum Frequency ◽  
Frequency Generation

Continuous wave uv radiation tunable from 285 nm to 400 nm by harmonic and sum frequency generation

1978 ◽  
Vol 17 (5) ◽  
pp. 721 ◽  
Author(s):  
S. Blit ◽  
E. G. Weaver ◽  
T. A. Rabson ◽  
F. K. Tittel
Keyword(s):  
Uv Radiation ◽  
Continuous Wave ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Frequency Generation

scholarly journals Efficient 494 mW sum-frequency generation of sodium resonance radiation at 589 nm by using a periodically poled Zn:LiNbO_3 ridge waveguide

2009 ◽  
Vol 17 (20) ◽  
pp. 17792 ◽  
Author(s):  
Tadashi Nishikawa ◽  
Akira Ozawa ◽  
Yoshiki Nishida ◽  
Masaki Asobe ◽  
Feng-Lei Hong ◽  
...  
Keyword(s):  
Ridge Waveguide ◽  
Sum Frequency Generation ◽  
Resonance Radiation ◽  
Periodically Poled ◽  
Sum Frequency ◽  
Frequency Generation
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