Small and Lightweight All‑Solid‑State Passively <i>Q</i>‑Switched Laser for Deep‑Space Exploration

Ya Xu; Xi Chen; Mingjian Wang; Bo Dai; Jiqiao Liu; Zhenzhen Yu; Xia Hou; Weibiao Chen

doi:10.3788/CJL240632

Chinese Journal of Lasers, Volume. 51, Issue 22, 2201009(2024)

Small and Lightweight All‑Solid‑State Passively Q‑Switched Laser for Deep‑Space Exploration

Ya Xu^1,2, Xi Chen², Mingjian Wang^2、*, Bo Dai¹, Jiqiao Liu², Zhenzhen Yu², Xia Hou², and Weibiao Chen³

¹School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

²Aerospace Laser Technology and System Department, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

³Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

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Figures & Tables(11)

Fig. 1. Variation of single pulse energy with initial transmittance for different output mirror reflectivity values

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Fig. 2. Single pulse energy and pulse width varies with the initial transmittance at an output mirror reflectivity of 0.6

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Fig. 3. Structure of the laser

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Fig. 4. Laser picture after package

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Fig. 5. Laser output repetition frequency

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Fig. 6. Stability measurement of laser output single pulse energy

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Fig. 7. Pulse profile of the laser

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Fig. 8. Beam profile and beam quality of the output laser

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Fig. 9. Measurement of the laser quality

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Table 1. Comparison of deep-space detection laser indexes^[8-12]

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Table 1. Comparison of deep-space detection laser indexes^[8-12]

Performance index	Clementine （1994）	Chandrayan-1 （2008）	CE-1 （2007）	CE-3 （2013）	SELENE （2007）	MOLA （1992）
Pulse width /ns	$~$ 8	2	$~$ 5	6	17	7.6
Pulse energy /mJ	171		150	45	100	41
Repetition frequency /kHz	1	10	1	2	1	10
Size /（mm×mm×mm）	40×100×220		95×122×236	49×80×190	83×150×170
Weight /kg	1	3.0	2.5	1.3	1.6	5.38
Power dissipation /W	3.5	15	15	10		13.7

Table 2. Parameters used in calculation
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Table 2. Parameters used in calculation
Parameter Value
$σ / c m^{2}$ $2.8 \times 10^{- 19}$
$σ_{g s} / c m^{2}$ $7.8 \times 10^{- 18}$
$σ_{e s} / c m^{2}$ $2.3 \times 10^{- 18}$
τ /μs $230$
$γ$ $1$
$h ν / J$ $1.86 \times 10^{- 19}$
$A / c m^{2}$ $1.225 \times 10^{- 3}$
$n_{1}$ $1.81$
$n_{2}$ $1.82$
$L$ $0.05$
$l_{g} / m m$ $8$
$l_{s} / m m$ $3$
$c / (m ∙ s^{- 1})$ $3 \times 10^{8}$

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Ya Xu, Xi Chen, Mingjian Wang, Bo Dai, Jiqiao Liu, Zhenzhen Yu, Xia Hou, Weibiao Chen. Small and Lightweight All‑Solid‑State Passively Q‑Switched Laser for Deep‑Space Exploration[J]. Chinese Journal of Lasers, 2024, 51(22): 2201009

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