Optical design and stray light control for a space-based laser space debris removal mission

Peixian Han; Peixian Han; Peixian Han; Peixian Han; Junli Guo; Junli Guo; Junli Guo; Junli Guo; Qihong Bao; Qihong Bao; Tao Qin; Tao Qin; Tao Qin; Ge Ren; Ge Ren; Ge Ren; Ge Ren; Yong Liu

doi:10.1364/AO.432386

Applied Optics
Vol. 60,
Issue 25,
pp. 7721-7730
(2021)
•https://doi.org/10.1364/AO.432386

Optical design and stray light control for a space-based laser space debris removal mission

Peixian Han, Junli Guo, Qihong Bao, Tao Qin, Ge Ren, and Yong Liu

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Peixian Han, Junli Guo, Qihong Bao, Tao Qin, Ge Ren, and Yong Liu, "Optical design and stray light control for a space-based laser space debris removal mission," Appl. Opt. 60, 7721-7730 (2021)

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Abstract

In low-Earth orbit, the already existing population of small and medium debris (between 1 cm and several dozens of cm) is a concrete threat to operational satellites. A space-based laser space debris removal (SLDR) system that can remove hazardous debris around selected space assets appears to be a flexible and effective project. To achieve high-precision tracking and emitting, the optical system of the SLDR mission includes a target-detection telescope and emitting telescope, adopting a common light path structure. The optical design results, system performance, tolerance budget, and detailed stray light control design are presented in this paper. The large-aperture off-axis two-mirror beam-narrowing system characteristics are also discussed in terms of stray light control. This paper will present the lateral-displacement (LD) setting, two-stage fore baffle design, black baffle surface selection, and opening direction of the telescope door. The results showed that the stray light elimination reaches a $ 10^{-9} $ order, meeting design requirements.

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Parameter	Tolerance
PM radius	$\pm 3 m m$
PM RMS figure error	$λ / 30$
SM radius	$\pm 0.5 m m$
SM RMS figure error	$λ / 35$
SM tilt	$\pm 5^{''}$
SM decenter	$\pm 0.01 m m$
PM radius of imaging lens	$\pm 0.5 m m$
PM conic of imaging lens	$\pm 0.0005$
PM RMS figure error of imaging lens	$λ / 35$
PM tilt of imaging lens	$\pm 5^{''}$
PM decenter of imaging lens	$\pm 0.01 m m$
SM radius of imaging lens	$\pm 0.3 m m$
SM conic of imaging lens	$\pm 0.0005$
SM RMS figure error of imaging lens	$λ / 35$
SM tilt of imaging lens	$\pm 5^{''}$
SM decenter of imaging lens	$\pm 0.01 m m$
Test plate fit $N$ of lens	1 fringes
Irregularity $Δ N$	0.2 fringes
Air spacing	$\pm 0.01 m m$
Lens thickness	$\pm 0.02 m m$
Lens wedge	$\pm 0.02 m m$
Lens tilt	$\pm 1 5^{''}$
Lens decenter	$\pm 0.02 m m$

Parameters	Value
${S N R}_{min}$	4
$t_{max}$	1.2 ms
$τ_{0}$	0.65
$M$	6
$η$	0.48
$λ_{a}$	555 nm
$h$	$6.62607015 \times 10^{- 34} J \cdot s$
$c$	$3 \times 10^{8} m / s$

Parameter	Tolerance
PM radius	$\pm 3 m m$
PM RMS figure error	$λ / 30$
SM radius	$\pm 0.5 m m$
SM RMS figure error	$λ / 35$
SM tilt	$\pm 5^{''}$
SM decenter	$\pm 0.01 m m$
PM radius of imaging lens	$\pm 0.5 m m$
PM conic of imaging lens	$\pm 0.0005$
PM RMS figure error of imaging lens	$λ / 35$
PM tilt of imaging lens	$\pm 5^{''}$
PM decenter of imaging lens	$\pm 0.01 m m$
SM radius of imaging lens	$\pm 0.3 m m$
SM conic of imaging lens	$\pm 0.0005$
SM RMS figure error of imaging lens	$λ / 35$
SM tilt of imaging lens	$\pm 5^{''}$
SM decenter of imaging lens	$\pm 0.01 m m$
Test plate fit $N$ of lens	1 fringes
Irregularity $Δ N$	0.2 fringes
Air spacing	$\pm 0.01 m m$
Lens thickness	$\pm 0.02 m m$
Lens wedge	$\pm 0.02 m m$
Lens tilt	$\pm 1 5^{''}$
Lens decenter	$\pm 0.02 m m$

Parameters	Value
${S N R}_{min}$	4
$t_{max}$	1.2 ms
$τ_{0}$	0.65
$M$	6
$η$	0.48
$λ_{a}$	555 nm
$h$	$6.62607015 \times 10^{- 34} J \cdot s$
$c$	$3 \times 10^{8} m / s$

Abstract

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Tables (2)

Equations (19)

Applied Optics