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1.
利用半导体激光泵浦输出1064 nm波长的全固态连续Nd:YVO4激光器作为泵浦源,采用周期调谐和温度调谐组合调谐技术,对基于掺氧化镁周期性极化铌酸锂晶体(MgO:LiNbO3, PPMgLN)准相位匹配(QPM)的全固态连续波(CW)光学参量振荡器(OPO)宽波段无分立连续调谐输出特性进行研究。实验采用连续工作模式和外腔结构,基于多周期PPMgLN晶体的30.2,30.4和30.6 m周期,在改变晶体的极化周期的基础上,同时在30~100 ℃范围内调节晶体工作温度。实验结果表明:CW PPMgLN OPO的泵浦阈值仅为0.22 W;不同极化周期需要的温度调谐范围不同;信号光在1 559.8~1 597.2 nm近红外波段和闲频光在3 187.3~3 347.3 nm中红外波段连续调谐输出。实现了外腔式全固态CW OPO在信号光和闲频光波段的无分立连续调谐输出。 相似文献
2.
利用半导体激光泵浦输出1064 nm波长的全固态连续Nd:YVO4激光器作为泵浦源,采用周期调谐和温度调谐组合调谐技术,对基于掺氧化镁周期性极化铌酸锂晶体(MgO:LiNbO3, PPMgLN)准相位匹配(QPM)的全固态连续波(CW)光学参量振荡器(OPO)宽波段无分立连续调谐输出特性进行研究。实验采用连续工作模式和外腔结构,基于多周期PPMgLN晶体的30.2,30.4和30.6 m周期,在改变晶体的极化周期的基础上,同时在30~100 ℃范围内调节晶体工作温度。实验结果表明:CW PPMgLN OPO的泵浦阈值仅为0.22 W;不同极化周期需要的温度调谐范围不同;信号光在1 559.8~1 597.2 nm近红外波段和闲频光在3 187.3~3 347.3 nm中红外波段连续调谐输出。实现了外腔式全固态CW OPO在信号光和闲频光波段的无分立连续调谐输出。 相似文献
3.
报道了一个低阈值宽调谐、被动调Q、单谐振掺MgO的周期性极化铌酸锂晶体(PPMgLN)光学参量振荡器。利用被动调Q的Nd:YVO4激光器作为泵浦源,采用外腔结构,在室温下,实现了PPMgLN晶体的准相位匹配光学参量振荡。光参量振荡的阈值仅为0.27W(单脉冲能量4.5μJ、脉宽35ns);在泵浦光为1.35W(脉冲能量8.2μJ、脉宽35ns),PPMgLN周期为31μm时,获得了161.9mW,3.202μm脉冲激光输出;同时获得了98.5mW的1.594μm信号光输出,总的光光转化效率达到19.3%。通过改变晶体的周期,实现了闲频光3.13~4.19μm,信号光1.43~1.65μm的宽带可调谐激光输出。 相似文献
4.
报道了一个低阈值宽调谐、被动调Q、单谐振掺MgO的周期性极化铌酸锂晶体(PPMgLN)光学参量振荡器。利用被动调Q的Nd:YVO4激光器作为泵浦源,采用外腔结构,在室温下,实现了PPMgLN晶体的准相位匹配光学参量振荡。光参量振荡的阈值仅为0.27 W(单脉冲能量4.5 μJ、脉宽35 ns);在泵浦光为1(脉冲能量8.2 μJ、脉宽35 ns),PPMgLN周期为31 μm时,获得了161.9 mW,3.202 μm脉冲激光输出;同时获得了98.5 mW的1.594 μm信号光输出,总的光-光转化效率达到19.3%。通过改变晶体的周期,实现了闲频光3.13~4.19 μm,信号光1.43~1.65 μm的宽带可调谐激光输出。 相似文献
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报道了一台高重复频率2 mm光学参量振荡器泵浦的磷锗锌光学参量振荡器。磷锗锌晶体(ZnGeP2,简称ZGP)采用Ⅰ类相位匹配方式,切割角度q为55°,f为0°,尺寸5.5 mm×6 mm×18 mm,在4.0 kHz重复频率下,当注入5.2 W的2 mm圆偏振光时,获得310 mW中红外输出,p偏振态2 mm到3~5 mm光-光转换效率12%。通过调节晶体的角度,实验获得ZGP光学参量振荡器的波长调谐曲线,在误差范围内与理论变化规律相符。 相似文献
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红外激光光源在微量气体、高分辨率光谱分析和量子光学研究等领域具有重要的应用.本文利用锁定单共振光学参量振荡器内腔标准具的方案获得了无跳模连续调谐的红外激光输出,理论和实验研究了红外激光的强度噪声特性,分析了影响强度噪声的因素.通过控制非线性晶体的温度和标准具调制信号实现了对红外激光强度噪声的抑制.当控制非线性晶体工作温度为60℃,内腔标准具调制信号为8 kHz时,单共振光学参量振荡器输出信号光和闲置光的强度噪声分别降低了11和8 dB. 相似文献
9.
为了研究热致相位失配对中红外连续波单谐振光学参量振荡器(CW-SRO)输出效率的影响, 结合CW-SRO计算模型和热传导方程,利用有限元分析方法,重点对输出3.3 m波长闲频光的CW-SRO进行了分析。计算了不同信号光输出耦合率及不同泵浦功率下CW-SRO晶体输出截面上热致相位失配量的分布。由计算结果可以看出:晶体吸收腔中振荡信号光是导致晶体热效应的主要因素;在相同的输入条件下,泵浦功率在30 W以上时CW-SRO的热致相位失配将会大大降低其泵浦损耗率;通过增加信号光输出耦合率的方法,可以减少热致相位失配对CW-SRO输出效率的影响,但CW-SRO的振荡阈值会增加。 相似文献
10.
为了研究热致相位失配对中红外连续波单谐振光学参量振荡器(CW-SRO)输出效率的影响, 结合CW-SRO计算模型和热传导方程,利用有限元分析方法,重点对输出3.3 m波长闲频光的CW-SRO进行了分析。计算了不同信号光输出耦合率及不同泵浦功率下CW-SRO晶体输出截面上热致相位失配量的分布。由计算结果可以看出:晶体吸收腔中振荡信号光是导致晶体热效应的主要因素;在相同的输入条件下,泵浦功率在30 W以上时CW-SRO的热致相位失配将会大大降低其泵浦损耗率;通过增加信号光输出耦合率的方法,可以减少热致相位失配对CW-SRO输出效率的影响,但CW-SRO的振荡阈值会增加。 相似文献
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Compact efficient optical parametric generator internal to a Q-switched Nd:YVO4 laser with periodically poled MgO:LiNbO3 下载免费PDF全文
This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVOquasi-phase-matching,
intracavity optical parametric generator, periodically poled
MgO-doped lithium niobate (PPMgLN) Project supported by the National
Natural Science Foundation of China (Grant Nos 10474071 and
60671036). 4265K, 4260F, 4270 This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVOquasi-phase-matching,
intracavity optical parametric generator, periodically poled
MgO-doped lithium niobate (PPMgLN) Project supported by the National
Natural Science Foundation of China (Grant Nos 10474071 and
60671036). 4265K, 4260F, 4270 This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVOquasi-phase-matching,
intracavity optical parametric generator, periodically poled
MgO-doped lithium niobate (PPMgLN) Project supported by the National
Natural Science Foundation of China (Grant Nos 10474071 and
60671036). 4265K, 4260F, 4270 This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVOquasi-phase-matching,
intracavity optical parametric generator, periodically poled
MgO-doped lithium niobate (PPMgLN) Project supported by the National
Natural Science Foundation of China (Grant Nos 10474071 and
60671036). 4265K, 4260F, 4270 This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVOquasi-phase-matching,
intracavity optical parametric generator, periodically poled
MgO-doped lithium niobate (PPMgLN) Project supported by the National
Natural Science Foundation of China (Grant Nos 10474071 and
60671036). 4265K, 4260F, 4270 This paper demonstrates a compact efficient optical parametric
generator internal to a Q-switched diode-end-pumped Nd:YVO$_{4}$
laser with periodically poled MgO:LiNbO3(PPMgLN). With the
Q-switch set at a repetition rate of 25kHz and the PPMgLN crystal
operated at room temperature (25\du\,), the intracavity optical
parametric generator threshold was reached as a diode pump power of
0.9\,W. A maximum signal output power of 0.34W with a pulse width
of 25\,ns and a beam quality factor of 1.4 was obtained at an
incident diode power of 3.4\,W, leading to a conversion efficiency of
10{\%} with a slope efficiency of 14.4{\%}. By varying the crystal
temperature from 25 to 200\du, the output signal wavelengths were
tuned in range of 1506--1565\,nm. Over a 30-minutes interval, the
instability of the signal power was measured to be less than 1{\%}.
In addition, the threshold pump intensity for the intracavity optical
parametric generator is theoretically investigated, and the obtained
result is in good agreement with the experimental results. 相似文献
13.
Continuous-wave mid-infrared intracavity singly resonant optical parametric oscillator based on periodically poled lithium niobate 下载免费PDF全文
This paper reports a continuous-wave (CW) mid-infrared intracavity
singly resonant optical parametric oscillator based on periodically
poled lithium niobate (PPLN) pumped by a diode-end-pumped CW
Nd:YVO$_{4}$ laser. Considering the thermal lens effects, it adopted
an optical ballast lens and the near-concentric cavity for better
operation. At the PPLN's grating period of 28.5\,$\mu$m and the
temperature of 140\du, the maximum idler output power of 155\,mW at
3.86\,$\mu$m has been achieved when the 808\,nm pump power is
8.5\,W, leading to an optical-to-optical conversion efficiency of
1.82{\%}. 相似文献
14.
Continuous-wave mid-infrared intracavity singly resonant optical parametric oscillator based on periodically poled lithium niobate 下载免费PDF全文
This paper reports a continuous-wave (CW) mid-infrared intracavity singly resonant optical parametric oscillator based on periodically poled lithium niobate (PPLN) pumped by a diode-end-pumped CW Nd:YVO4 laser. Considering the thermal lens effects, it adopted an optical ballast lens and the near-concentric cavity for better operation. At the PPLN's grating period of 28.5 μm and the temperature of 140℃, the maximum idler output power of 155 mW at 3.86 μm has been achieved when the 808 nm pump power is 8.5 W, leading to an optical-to-optical conversion efficiency of 1.82%. 相似文献
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16.
Mid-infrared generation based on a periodically poled LiNbO3 optical parametric oscillator 下载免费PDF全文
We report a nanosecond Nd:YVO_4-pumped optical parametric oscillator (OPO) based on periodically poled LiNbO_3 (PPLN). Tuning is achieved in this experiment by varying the temperature and period of the PPLN. The design of double-pass singly resonant oscillator (DSRO) and confocal cavity enables the OPO threshold to be lowered considerably, resulting in a simple, compact, all-solid-state configuration with the mid-infrared idler powers of up to 466mW at 3.41μm. 相似文献
17.
Period and temperature tuning of cascaded opticalparametric oscillator based on periodically poled LiNbO3 下载免费PDF全文
We report the broadly tunable source by a cascaded optical parametric oscillator in the periodically poled LiNbO_3 (PPLN) with domain grating period and temperature tuning. The optical parametric oscillator was pumped by a passive Q-switched Nd:YVO_4 laser. Multi-wavelength outputs from visible to infrared were obtained. The temperature of the PPLN crystal changed within the range of 70-150℃ with different periods of PPLN. The tunable range covered from 433 to 1657nm. 相似文献
18.
Efficient continuous-wave eye-safe region signal output from intra-cavity singly resonant optical parametric oscillator 下载免费PDF全文
We report an efficient continuous-wave (CW) tunable intra-cavity singly resonant optical parametric oscillator based on the multi-period periodically poled lithium niobate and using a laser diode (LD) end-pumped CW 1064 nm Nd:YVO4 laser as the pump source. A highly efficiency CW operation is realized through a careful cavity design for mode matching and thermal stability. The signal tuning range is 1401-1500 nm obtained by varying the domain period. The maximum output power of 2.2 W at 1500 nm is obtained with a 17.1 W 808 nm LD power and the corresponding conversion efficiency is 12.9%. 相似文献
19.
High efficiency continuous-wave tunable signal output of an intracavity singly resonant optical parametric oscillator based on periodically poled lithium niobate 下载免费PDF全文
In this paper we report on a continuous-wave (CW) intracavity singly
resonant optical parametric oscillator (ICSRO) based on periodically
poled LiNbO3 (PPLN) pumped by a diode-end-pumped CW
Nd:YVO4 laser. Considering the thermal lens effects and
diffraction loss, an optical ballast lens and a near-concentric
cavity are adopted for better operation. Through varying the grating
period and the temperature, the tunable signal output from 1406~nm
to 1513~nm is obtained. At a PPLN grating period of 29~μ m and a
temperature of 413~K, a maximum signal output power of 820~mW at
1500~nm is achieved when the 808~nm pump power is 10.9~W, leading to
an optical-to-optical conversion efficiency of 7.51%. 相似文献
20.
1-W, high-repetition-rate room temperature operation of mid-infrared optical parametric oscillator based on periodically poled MgO-doped LiNbO 下载免费PDF全文
In this paper a high-repetition-rate mid-infrared (mid-IR) optical parametric oscillator based on periodically poled MgO-doped LiNbO3 (PPMgLN) at room temperature was demonstrated. The maximum average mid-IR output power at 3.63μm was 1.02 W with the repetition rate of 60kHz and corresponding efficiency from the pump to the idler was 26.7%. The temperature tuning and the period tuning characteristics were also discussed. 相似文献