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index of refraction 【物理學】折射指數。

index signal

Quantum coherence and interference have led to the observation of many new effects and new techniques in quantum optics and atomic physics . examples include coherent population trapping , electrom agnetically induced transparency , lasing without inversion , and enhancement of the index of refraction without absorption 當應用相干場來驅動光學介質時,可以使得介質的吸收和色散關系發生極大改變,產生許多新的效應,如相干布居捕獲、電磁誘導透明、無反轉激光、無吸收折射率增強等。

When light travels through this system perpendicularly , the light after the first polarizer will divide into orthogonally polarized ordinary and extraordinary impulses . because of the difference between the extraordinary and ordinary indices of refraction of the crystal , after passing the crystal , the two orthogonally polarized impulses will be different in phase 光線正入射到這一系統,通過起偏振器后的偏振光投射到晶體上時分解為互相正交的尋常光和非常光,兩束光由于折射率的不同經過晶體時會有一定的位相差。

Three characteristic features are found . first , for the same set of atom - light interaction parameters , the indices of refraction are large at three different frequencies where the absorption vanishes . these three frequencies are determined by the resonance transition frequencies between dressed states produced by the strong driving field 我們發現了三個重要特征:首先,在相同的原子和光相互作用參數條件下,同時存在三個無吸收折射率增強點,這三個點所處的頻率位置由驅動場產生的修飾態之間的共振躍遷決定。

Vo _ 2 is a typical thermochromic material . with the increase of temperature , the semiconductor - to - metal transition will occur at 68 c ; with the abrupt change of vo _ 2 crystal structure , electrical resistance and optical index of refraction transmissivity and reflectivity will change , which results in great application potentials in many fields Vo2是一種相變型金屬氧化物,隨溫度的升高,在相變溫度( tc = 68 )發生從低溫單斜結構向高溫四方金紅石結構的轉變,同時,伴隨著電阻率和紅外光透過率的突變。

But if a substance with a higher index of refraction ? such as skin ? is pressed against the window , the light will be absorbed at the points of contact , a phenomenon called frustrated total internal reflection 但是如果有個折射率比較高的物質(例如皮膚)壓住窗口,位于接觸點的光就會被吸收,這個現象稱為受抑內全反射。

Scp - zro2 ( gem - grade zirconia ) has high purity and is mainly used for making cubic zirconia crystal ( artificial gems ) , and as additive for optical glass and fibre with high index of refraction 具有高純度,是制造立方氧化鋯晶體(人造寶石)的主要原材料,也用作高折射光學玻璃和光學纖維的添加劑。

But what happens to light in very special media that have a negative index of refraction is currently being hotly debated in leading physics journals and preprints 不過,最近在幾個重要的物理期刊和預印本中,卻熱烈討論著光在折射率為負的特殊介質中,會有什麼狀況出現。

The dispersion - absorption relations of the two - level atom system tell us that at or near the resonance frequency , the index of refraction is large but absorption is equally large 由二能級系統的吸收色散關系得知,在共振或者近共振時,折射率很大吸收也很大。

Ior - also known as index of refraction , a physical parameter of transparent matter that defines how strong a ray gets bent when entering media of different density 折射度物理參數,表現折射物體的光折射特性,光線穿過某不同密度物質所應改變方向的角度。

By ior ( fresnel reflections ) - uses a fixed reflection curve based on the angle of view and its strength is controlled by the material ' s index of refraction 依照折射率(菲涅耳反射)使用一個依據觀察角度計算的反射折射,其數值大小依據物質折射率。

In real life , this is a phenomena that occurs when sunlight travels through a medium with a different index of refraction in certain cuts and angles 在真實世界中,這是一種當陽光以一定角度穿過具有不同折射率的媒質時所發生的現象。

This kind of coherent trapping leads maximal atomic coherence , which characterizes ultralarge index of refraction and vanishing absorption 這樣的相干捕獲導致最大的原子相干,就對應超大折射率和消失的吸收。

Far from resonance , the two - level medium becomes transparent but the index of refraction is almost the same as in a vacuum 在遠離共振區,吸收很小,但此時折射率也變得和真空中一樣。

This speck disrupts the otherwise uniform index of refraction , creating a cloudy spot in a person ' s field of vision 這種小顆粒會破壞水晶體原本均質的折射率,在視野中制造出模糊的點。

Maximum and minimum bounds may be placed on any unknown thickness or index of refraction 全局解決方案/最優化方法用于獲得最好的解決方案,因此避免局部最小風險,極小化測量誤差

The index of refraction of most of the common glasses used in optical instruments lies between 1 . 46 and 1 . 96 光學儀器中最常用的玻璃其折射率多在1 46到1 96之間。

Heating the oil produces changes in the index of refraction of the oil , making the cell boundaries visible 取暖油產生變化,在折射率的油,使細胞界限明顯。

The index of refraction of air is 1 . 0 while the index of refraction of the polycarbonate is 1 . 55 光在空氣中的折射率為1 . 0 ,在聚碳酸脂中的折射率為1 . 55 。

Index of refraction 折光率,折射率