Optimized Design of Parameters for Wedge-Crystal Depolarizer

Ge, Jing Hua; Chen, Zhe; Chen, Yin Fang; Chen, Chun Yan; Zhai, Yan Fang; Zhang, Jun; Zhan, Shiping; Lin, Hong Huan; Wang, Jianjun; Deng, Qiwen

doi:10.4028/www.scientific.net/amm.110-116.3351

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…This is a simple and effective way to suppress the RAM noise. The phase difference δ(φ o -φ e ) of two beams of light after the EOM with wedged-angle γ can be expressed as [42] δ…”

Section: Ram Noisementioning

confidence: 99%

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions

Zhang,

Wang,

Liu

et al. 2023

Class. Quantum Grav.

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Many space based gravity missions require frequency stabilized lasers with stringent requirements. Toward those requirements, we develop a compact frequency-stabilized laser which is referenced to the R(56)32−0: a1 transition of molecular iodine based on the modulation transfer spectroscopy technique. The stability of the laser is limited by the beam pointing noise, the electronic servo noise, and the residual amplitude modulation (RAM) noise. To improve the beam pointing stability, the system is constructed by gluing most components of the optical system on an ultra-low expansion glass base. We use a pre-amplifier to suppress the electronic servo noise, and use a wedged electro-optic phase modulator to suppress the RAM noise. The fractional frequency instability of the system is evaluated to be 3.3 × 10−15 at 2 s and 4 s averaging time, and is lower than 6 × 10−15 at averaging times from 1 s to 10 000 s. To our knowledge, this is the best short-term (1–4 s) instability reported so far for an iodine stabilized laser. The stability fully meets the requirements of next generation gravity mission and laser interferometer space antenna mission.

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“…This is a simple and effective way to suppress the RAM noise. The phase difference δ(φ o -φ e ) of two beams of light after the EOM with wedged-angle γ can be expressed as [42] δ…”

Section: Ram Noisementioning

confidence: 99%

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions

Zhang,

Wang,

Liu

et al. 2023

Class. Quantum Grav.

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“…( 23) and ( 24) into a completely unpolarized component. The polarization scrambling methods mentioned are made to simulate ideal depolarizers (Lu and Loeber, 1975), with work continuing to be done in this field of depolarizer design (Ge et al, 2012;Kroh et al, 2021;Marć et al, 2019;Marco et al, 2021;Shaham and Eisenberg, 2011;Zhang et al, 2007). Nondeterministic polarization transformations do not affect the total intensity 𝑆 0 , only altering the polarization vector S. The nine remaining parameters of general nondeterministic ("depolarizing") Mueller matrices take the form of a 3 × 3 symmetric real matrix m and a real vector p with magnitude less than or equal to unity (Lu and Chipman, 1996):…”

Section: Nondeterministic Transformationsmentioning

confidence: 99%

Quantum Polarimetry

Goldberg

2021

Preprint

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Polarization is one of light's most versatile degrees of freedom for both classical and quantum applications. The ability to measure light's state of polarization and changes therein is thus essential; this is the science of polarimetry. It has become ever more apparent in recent years that the quantum nature of light's polarization properties is crucial, from explaining experiments with single or few photons to understanding the implications of quantum theory on classical polarization properties. We present a self-contained overview of quantum polarimetry, including discussions of classical and quantum polarization, their transformations, and measurements thereof. We use this platform to elucidate key concepts that are neglected when polarization and polarimetry are considered only from classical perspectives.

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“…The most popular and currently used depolarizers are designed in two ways as spatially distributed linear retarders or a composition of at least two birefringent plates having optical thickness greater than coherence length of the broad band light source. Spatial birefringence distribution has brought common forms known as Cornu or wedge types of depolarizers [7], and spectral birefringence distribution as Lyot depolarizer [8]. They are used in both, bulk optic systems [1] and optical fiber systems, as well [9].…”

Section: Introductionmentioning

confidence: 99%

Monochromatic Depolarizer Based on Liquid Crystal

et al. 2019

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Polarization is a very useful parameter of a light beam in many optical measurements. Improvement of holographic systems requires optical elements which need a diffused and depolarized light beam. This paper describes a simple monochromatic depolarizer based on a pure vertically aligned liquid crystal without pretilt. In this work we present an extended description of depolarizer by analyzing its electro-optic properties measured in spatial and time domains with the use of crossed polarizers and polarimetric configurations. Crossed polarizers set-up provides information on spatial and temporal changes of microscopic textures while polarimetric measurement allows to measure voltage and time dependence of degree of polarization. Three different thicknesses, i.e., 5 μm, 10 μm and 15 μm have been manufactured in order to analyze another degree of freedom for this type of depolarizer device based on a liquid crystals’ material. Consideration of the light scattering capability of the cell is reported.

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Optimized Design of Parameters for Wedge-Crystal Depolarizer

Cited by 4 publications

References 6 publications

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions

Quantum Polarimetry

Monochromatic Depolarizer Based on Liquid Crystal

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Optimized Design of Parameters for Wedge-Crystal Depolarizer

Cited by 4 publications

References 6 publications

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10−15 for space based gravity missions

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10−15 for space based gravity missions

Quantum Polarimetry

Monochromatic Depolarizer Based on Liquid Crystal

Contact Info

Product

Resources

About

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions

An ultra-stable laser based on molecular iodine with a short-term instability of 3.3 × 10⁻¹⁵ for space based gravity missions