高功率板条激光技术现状与发展趋势

王辉华; 林龙信; 叶辛

doi:doi:10.3788/IRLA20190456

红外与激光工程, 2020, 49 (7): 20190456, 网络出版: 2020-08-19

高功率板条激光技术现状与发展趋势下载： 996次

Status and development trend of high power slab laser technology

王辉华林龙信叶辛

作者单位

海军研究院，北京 102442

图 & 表

图 1. 固体激光构型改变对热光畸变的改善

Fig. 1. Improvement of thermo-optical distortion by solid laser configuration change

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图 2. 连续波泵浦板条激光技术的发展历程

Fig. 2. Development process of continuous wave pumped slab laser technology

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图 3. Grumann公司的100 kW级CW端泵浦传递冷却板条激光模块及MOPA链路结构。未变灰的部份表示两个放大链路的拷贝。YDFA: Yb 掺杂光纤放大器；PM: 相位调制器；AOM: 声光调制器；PA: 预放大器

Fig. 3. Grumann's 100 kW CW-end pumped cooling slab laser module and MOPA link. The un-grayed parts represent copies of the two amplified links. YDFA: Yb doped fiber amplifier; PM: phase modulator; AOM: acousto-optic modulator; PA: pre-amplifier

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图 4. QCW单面泵浦传递冷却板条激光模块

Fig. 4. QCW single-sided pumped cooling slab laser module

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图 5. 多段变掺杂板条（下）与单掺杂板条（上）的泵浦储能对比

Fig. 5. Comparison of pump energy storage between multi-segment variable-doped slabs (bottom) and single-doped slabs (top)

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图 6. 板条放大器中的功率转化流程

Fig. 6. Power conversion process in a slab amplifier

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表 1CW端泵浦和QCW面泵浦板条激光特征对比

Table1. Comparison of laser characteristics of CW end-pumped and QCW surface-pumped slab lasers

Operating mode	Advantage
CW end pump	LD bar has high average power, low quantity and low cost
	Low requirements on media size
	Thin slabs and high energy storage density
	No pulse drive power supply, the power supply is small
	Heat sink welding technology is less difficult
QCW surface pump	High small signal gain, high energy conversion efficiency
	No need to bond undoped YAG at both ends
	Uniform energy storage
	Thickness of the slab is relatively thick, and the diffraction loss between amplification stages is small
	Brightness can be improved by coaxial non-coherent timing synthesis technology ^[16]

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王辉华, 林龙信, 叶辛. 高功率板条激光技术现状与发展趋势[J]. 红外与激光工程, 2020, 49(7): 20190456. Huihua Wang, Longxin Lin, Xin Ye. Status and development trend of high power slab laser technology[J]. Infrared and Laser Engineering, 2020, 49(7): 20190456.

高功率板条激光技术现状与发展趋势下载： 996次

图 1. 固体激光构型改变对热光畸变的改善

Fig. 1. Improvement of thermo-optical distortion by solid laser configuration change

图 2. 连续波泵浦板条激光技术的发展历程

Fig. 2. Development process of continuous wave pumped slab laser technology

图 3. Grumann公司的100 kW级CW端泵浦传递冷却板条激光模块及MOPA链路结构。未变灰的部份表示两个放大链路的拷贝。YDFA: Yb 掺杂光纤放大器；PM: 相位调制器；AOM: 声光调制器；PA: 预放大器

Fig. 3. Grumann's 100 kW CW-end pumped cooling slab laser module and MOPA link. The un-grayed parts represent copies of the two amplified links. YDFA: Yb doped fiber amplifier; PM: phase modulator; AOM: acousto-optic modulator; PA: pre-amplifier

图 4. QCW单面泵浦传递冷却板条激光模块

Fig. 4. QCW single-sided pumped cooling slab laser module

图 5. 多段变掺杂板条（下）与单掺杂板条（上）的泵浦储能对比

Fig. 5. Comparison of pump energy storage between multi-segment variable-doped slabs (bottom) and single-doped slabs (top)

图 6. 板条放大器中的功率转化流程

Fig. 6. Power conversion process in a slab amplifier

表 1CW端泵浦和QCW面泵浦板条激光特征对比

Table1. Comparison of laser characteristics of CW end-pumped and QCW surface-pumped slab lasers

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高功率板条激光技术现状与发展趋势 下载： 996次

图 1. 固体激光构型改变对热光畸变的改善

Fig. 1. Improvement of thermo-optical distortion by solid laser configuration change

图 2. 连续波泵浦板条激光技术的发展历程

Fig. 2. Development process of continuous wave pumped slab laser technology

图 3. Grumann公司的100 kW级CW端泵浦传递冷却板条激光模块及MOPA链路结构。未变灰的部份表示两个放大链路的拷贝。YDFA: Yb 掺杂光纤放大器；PM: 相位调制器；AOM: 声光调制器；PA: 预放大器

Fig. 3. Grumann's 100 kW CW-end pumped cooling slab laser module and MOPA link. The un-grayed parts represent copies of the two amplified links. YDFA: Yb doped fiber amplifier; PM: phase modulator; AOM: acousto-optic modulator; PA: pre-amplifier

图 4. QCW单面泵浦传递冷却板条激光模块

Fig. 4. QCW single-sided pumped cooling slab laser module

图 5. 多段变掺杂板条（下）与单掺杂板条（上）的泵浦储能对比

Fig. 5. Comparison of pump energy storage between multi-segment variable-doped slabs (bottom) and single-doped slabs (top)

图 6. 板条放大器中的功率转化流程

Fig. 6. Power conversion process in a slab amplifier

表 1CW端泵浦和QCW面泵浦板条激光特征对比

Table1. Comparison of laser characteristics of CW end-pumped and QCW surface-pumped slab lasers

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高功率板条激光技术现状与发展趋势下载： 996次