Single lens sensor and reference for auto-alignment

Shun-Xing Tang; Ya-Jing Guo; Dai-Zhong Liu; Lin Yang; Xiu-Qing Jiang; Zeng-Yun Peng; Bao-Qiang Zhu

doi:10.1017/hpl.2017.39

Journals >High Power Laser Science and Engineering >Volume 6 >Issue 1 >Page 010000e5 > Article

High Power Laser Science and Engineering
Vol. 6, Issue 1, 010000e5 (2018)

Single lens sensor and reference for auto-alignment

Shun-Xing Tang, Ya-Jing Guo^†, Dai-Zhong Liu, Lin Yang, Xiu-Qing Jiang, Zeng-Yun Peng, and Bao-Qiang Zhu

Author Affiliations

Joint Laboratory of High Power Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

show less

DOI: 10.1017/hpl.2017.39 Cite this Article Set citation alerts

Shun-Xing Tang, Ya-Jing Guo, Dai-Zhong Liu, Lin Yang, Xiu-Qing Jiang, Zeng-Yun Peng, Bao-Qiang Zhu. Single lens sensor and reference for auto-alignment[J]. High Power Laser Science and Engineering, 2018, 6(1): 010000e5 Copy Citation Text

EndNote(RIS)

BibTex

Plain Text

show less

Fig. 1. Scheme of the single lens alignment sensor and reference.

Download full size | View in the Article

Fig. 2. Experimental setup using sensor for alignment.

Download full size | View in the Article

Fig. 3. Laser beam profile for alignment.

Download full size | View in the Article

Fig. 4. Near-field plus far-field alignment image captured by the sensor.

Download full size | View in the Article

Fig. 5. Near-field and far-field center changes as mirror is adjusted in different horizontal directions ($x+/x-$).

Download full size | View in the Article

Fig. 6. (a) Initial alignment image; (b) alignment image after first alignment process; (c) alignment image after second alignment process.

Download full size | View in the Article

Item	Correlation	Symbol implication
$D_{c}$	$D_{c}^{+}(f-2d/n)\unicode[STIX]{x1D703}_{c}	$f$ – focal length of lens$D$ – diameter of lens; $d$ – thickness of plate	$M$ – size in pixels of camera$A$ – beam aperture; $D_{c}$ – near-field tolerance (max deviation from reference)
$R_{\text{NF}}$	$fR_{c}/(2dDA)$	$n$ – refractive index
$\unicode[STIX]{x1D703}_{c}$	$D_{c}+(f-2d/n)\unicode[STIX]{x1D703}_{c}	$r_{1}$ – reflectivity at front side of plate	$R_{\text{NF}}$ – position alignment accuracy$\unicode[STIX]{x1D703}_{c}$ – far-field tolerance (max deviation from reference)
$R_{\text{FF}}$	$R_{c}/f.$	$r_{2}$ – reflectivity at rear side of plate
Contrast	$r_{1}r_{2}[dA^{2}/(1.22\unicode[STIX]{x1D706}f^{2})]^{2}=1{-}20^{\ast }$	$\unicode[STIX]{x1D706}$ – wavelength of laser beam	$R_{\text{FF}}$ – pointing angle alignment accuracy
		$R_{c}$ – pixel size of camera