Athermalization of optical systems

Lesniewski, Marcin; Kryszczynski, Tadeusz

doi:10.1117/12.301355

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stability of the optical performance of the terminal under the cyclic thermal space environment can be achieved by athermalizing optical components. 135 To do so different design parameters, such as geometry (flexures 136 ), materials, and coatings (attending to their thermomechanical and thermo-optical properties) have to be combined to achieve the optimum solution. 112 A combination of these techniques is presented for a catadioptric telescope design for an FSOC satellite by Rahman et al 137 and in the design of the FSOC TBIRD terminal.…”

Section: Thermal Phenomenamentioning

confidence: 99%

“…In this way, the WFE and stress birefringence phenomena can be reduced. The stability of the optical performance of the terminal under the cyclic thermal space environment can be achieved by athermalizing optical components 135 . To do so different design parameters, such as geometry (flexures 136 ), materials, and coatings (attending to their thermomechanical and thermo-optical properties) have to be combined to achieve the optimum solution 112 .…”

Section: Mitigation Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Badás,

Piron,

Bouwmeester

et al. 2023

Opt. Eng.

View full text Add to dashboard Cite

Growing interest in free-space optical communication, due to the high bandwidth and security provided by these links, has generated the necessity of designing high-performance satellite terminals. In order to develop these terminals, the optothermo-mechanical phenomena that appear in the space environment and their effect on optical communication links have to be understood in detail. A review of the opto-thermo-mechanical phenomena occurring in spaceborne terminals is presented, describing the relevance of each of them. The methods found to compute the impact on the communication performance due to opto-thermo-mechanical phenomena are collected by building the bridge between the optical and communication performance parameters. Finally, techniques available to mitigate the detrimental effects of these phenomena are classified, and the relevant research challenges are identified.

show abstract

Section: Thermal Phenomenamentioning

confidence: 99%

Section: Mitigation Techniquesmentioning

confidence: 99%

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Badás,

Piron,

Bouwmeester

et al. 2023

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…There exist two design strategies to athermalize an optical system. [1][2][3] Active ones use a wide range of sensors to monitor the optical system in order to determine the required settings of their actuators to maintain its optical performance. Passive athermalization strategies for optical systems combine multiple materials with different coefficients of thermal expansion in the mounting structure to minimize temperature dependent deformations.…”

Section: Introductionmentioning

confidence: 99%

Concept for a passive athermalization of additively manufactured and monolithic mounting structures

Pfuhl

Degünther

2023

Optical Sensors 2023

View full text Add to dashboard Cite

Passive athermalization techniques for optical systems combine materials in the mounting structure with different coefficients of thermal expansion (CTE) to minimize thermally driven shifts. However, such an approach requires complex structures to be manufactured with multiple high-precision opto-mechanical components. Our concept utilises a monolithic and additively manufactured mounting structure and a housing made of a second material to generate mechanical stresses caused by temperature fluctuations. The difference in coefficients of thermal expansion induces these mechanical stresses during temperature changes, resulting in elastic deformations of the inner monolithic structure. The magnitude of the local deformation of the monolithic structure is adjusted via the stiffness between the optical elements. This allows to control the displacement for each optical element such that their positions remain unaffected by a thermal load and thus passively athermalizes the optical system.

show abstract