Semi-active laser seeker design with combined diffractive optical element (CDOE)

Ünal, Ahmet

doi:10.1007/s12596-022-00954-5

Cited by 6 publications

(9 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For simplicity, background power (P B ), which is reflectance from the sun, was not added to the SNR equation. While 1064 nm is a commonly preferred wavelength for many laser seekers [1][2][3][4][5][6][7], the design wavelength of 1540 nm has been specifically chosen. The selection of this wavelength is based on considerations outlined in equation (9).…”

Section: Electro-optical System Designmentioning

confidence: 99%

“…In the context of this study, the FSS structure is solely taken as optical transmittance, as indicated in reference [1], when conducting the initial design phase. Due to the variations in FSS structure according to the requirements of electro-optical systems, it may be advisable to take only optical transmission.…”

Section: Electro-optical System Designmentioning

confidence: 99%

“…The target's position is determined by analyzing the laser beam reflected from the target onto the 4-quadrant detector. This method enables the measurement of the azimuth and elevation angles of the target [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The researchers, Liu et al [32], Liang et al [20], Vo et al [33], Li et al [34], Aguilar et al [35], Zhang et al [36], Chen et al [37], Ünal et al [1], and Zhang et al [38], have conducted various investigations related to the beam size on 4-quadrant detectors, enhancing the linear measurement range, studying the measurement sensitivity of Gaussian and Laguerre-Gaussian beams on 4-quadrant detectors, expanding the linear measurement range, and examining the effects of a non-uniform spot on 4-quadrant detectors.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to the reference [1], the focus of this research is to extend the linear measurement range and improve measurement sensitivity at the same time. Unlike the previous work, which aimed to enhance only sensitivity, this study aims to enhance the measurement sensitivity while broadening the measurement range of the seeker.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Laser seeker design with multi-focal diffractive lens

Ünal

2023

Eng. Res. Express

Self Cite

View full text Add to dashboard Cite

Diffractive optical elements are increasingly favoured due to their ability to provide numerous design freedoms by adjusting the Fresnel regions. The design freedoms make it possible to meet multiple system functions in electro-optical systems simultaneously by using a single optical element. This research introduces a novel laser seeker design with a multi-focal diffractive lens that enhances a laser seeker’s measurement sensitivity and linear measurement range. The development of the multi-focal combined lens, featuring two distinct regions with unique focal lengths, aims to simultaneously fulfill two system functions within the laser seeker. The central region of the lens is intended for adjusting the linear measurement range, while the outer region is utilized to regulate the measurement sensitivity of the seeker. The numerical optical wave propagation method was employed to simulate the behaviour of the laser seeker with a multi-focal diffractive lens, and the combined diffractive lens was compared to an ideal lens in the scope of laser seeker application. The simulation results indicate that the measurement sensitivity of the seeker has been increased between 0° to ±3° angular incidence, and the linear measurement range has been increased from ±18° to ±26°. The findings of this study contribute to the advancement of multi-focal diffractive lenses, which fulfil multiple functions within an electro-optical system concurrently.

show abstract