Research on common aperture optical device for high energy laser system

Gang Zhao; Wantao Deng; Huijun Xia; Mao Zhang

doi:10.1117/12.2533459

17 May 2019 Research on common aperture optical device for high energy laser system

Gang Zhao, Wantao Deng, Huijun Xia, Mao Zhang

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701O (2019) https://doi.org/10.1117/12.2533459
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

The main working mode of high energy laser system is to focus the transmitting laser beam on target under the condition that the target is tracked in closed loop by fine tracking module, so that it can be damaged or invalidated. Therefore, in order to achieve this effect, an optical device of common aperture is designed for high energy laser system. The emitting system of this device consists of an off-axis two-trans primary telescope module, a Galileo transmission telescope module used in focusing and a beam feeding module composed of dichroic mirror, fast mirror and other optical elements; at the same time, the receiving system of this device consists of the same off-axis two-trans primary telescope module, an imaging module used in fine tracking and the same beam feeding module. Taking incoherent combination laser in space as incident ray, we use optical design software in both sequential mode and non-sequential mode to design and simulate this device. The simulation results show that the distribution of spot at 0.5km~5km is obtained after the laser is modulated by different focusing quantities in the focusing telescope module, and the RMS value of laser wave front is better than λ/20 for emitting system. In addition, the performance of an imaging optical system composed of the primary telescope module and the fine tracking imaging module approach the diffraction limit after optimizing, and the system transfer function is greater than 0.6 at 70lp/mm. Such results in this paper confirm that the structure of this optical transceiver possesses reasonable structure and reliable performance, which meets the requirements of engineering application for high energy laser system.

Citation Download Citation

Gang Zhao, Wantao Deng, Huijun Xia, and Mao Zhang "Research on common aperture optical device for high energy laser system", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701O (17 May 2019); https://doi.org/10.1117/12.2533459

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available