黑体模拟器

根据黑体光壁腔观点，用几何光学方法模拟黑体，得一维齿腔黑体模型，其发射率ε＝０．９９９９９９９９，给出黑体模拟数学式及实用黑体模拟器的几何参数。     

串联倒锥式黑体模型

根据黑体镜腔特征，用几何光学方法模拟黑体得一串联倒推式黑体模拟器，推导黑体模拟数学式，给出适用模拟器参数。     

五锥黑体腔

用一特殊光路模拟黑体，将一个简单的三锥腔变成五锥式黑体模拟器。在尺寸不大的情况下设计发射率ε为０．９９９９９的黑体模型。给出黑体模拟数学式和适用模型的几何参数。     

柱隙锥齿型黑体模拟器

持黑体光壁腔观点用几何光学方法模拟黑体，得一柱隙锥齿型黑体模拟器，写出黑体数学模拟式，给出适用模拟器的身体参数。     

锥齿光隙黑体腔

用几何光学方法模拟黑体得一锥齿光隙黑体腔。给出黑体数学模拟式及适用胶体参数。     

四锥黑体腔

用几何光学方法模拟黑体,得一四锥黑体腔。推导了四锥腔的设计公式,并给出适用黑体腔的设计参数。     

黑体钳形腔

讨论黑体钳形腔的设计方法。给出黑体模拟数学式及适用腔体的几何参数。     

三锥黑体腔

持黑体光壁腔观点,用几何光学方法模拟黑体,得一三锥黑体腔。推导了三锥腔的设计公式,并给出实用黑体腔的设计参数。确定腔壁比辐射率值ε_6=0.16,黑体ε设计值达0.9999。     

黑体箭式腔

介绍黑体箭式腔的不同设计方法。给出黑体模拟数学式及箭腔的几何参数。     

镜腔黑体模型

根据黑本光壁腔特征，利用几何光学方法模拟得到－β锥／ｅ柱隙黑体模型。推导出黑体数学模拟式，给出适用黑体模型参数。     

Analogy between first-order phase transitions and blackbody radiation

The analogy between blackbody radiation and a phase equilibrium between vapor and liquid is drawn by deriving the Clapeyron equation in which the two probability distributions of blackbody radiation play the role of the two phases. The pressure of one of these distributions, which becomes negative at sufficiently high photon energies, is analogous to a negative pressure tending to break up a liquid. A similar type of critical phenomenon should be observed for blackbody radiation.     

-60℃～80℃面源黑体辐射特性校准系统

分析面源黑体及其辐射特性校准在红外热像仪研制、航天红外遥感及民用领域等的需求背景。提出一种基于光谱辐亮度比对的－60℃－80℃面源黑体辐射特性校准装置，并详细地分析校准数学模型。     

Amplitude-Squared Squeezing in a Kerr-Nonlinear Blackbody

We find that amplitude-squared squeezing of the photon field is present in a new blackbody, namely, a Kerr- nonlinear blackbody. The squeezing effect decreases as temperature T increases. The amount of the amplitude-squared squeezing in a Kerr-nonlinear blackbody is much larger than the corresponding squeezing in normal blackbody, and the degree of amplitude-squared squeezing is much larger than the amplitude squeezing for the same range of parameters in a Kerr-nonlinear blackbody.     

Thermal performance analysis of vacuum variable-temperature blackbody system

In this paper, the design and structure of a vacuum variable-temperature blackbody system were described, and the steady-state thermal analysis of a 3-D blackbody model was presented. Also, the thermal performance of the blackbody was evaluated using an infrared camera system. The blackbody system was constructed to operate under vacuum conditions (2.67 × 10⁻² Pa) to reduce its temperature uncertainty, which can be caused by vapor condensation at low temperatures usually below 273.15 K. A heat sink and heat shield including a cold shield were embedded around the radiator to maintain the heat balance of the blackbody. A simplified 3-D model of the blackbody including a radiator, heat sink, heat shield, cold shield, and heat source was thermophysically evaluated by performing finite elements analysis using the extended Stefan–Boltzmann’s rule, and the infrared radiating performance of the developed system was analyzed using an infrared camera system. On the basis of the results of measurements and simulations, we expect that the suggested blackbody system can serve as a highly stable reference source for the calibration and measurement of infrared optical systems within operational temperature ranges.     

Amplitude-squared squeezing of the photon field in a Kerr-nonlinear blackbody

We find the photon field in a Kerr-nonlinear blackbody is an amplitude-squared squeezed state. The squeezing effect decreases with increasing temperature T. The amount of the amplitude-squared squeezing in a Kerr-nonlinear blackbody is much larger than the corresponding squeezing in normal blackbody, and the degree of amplitude-squared squeezing is much larger than the amplitude squeezing for the same range of parameters in a Kerr-nonlinear blackbody. The frequency ω_k and parameter γ also have important influences on the amplitude-squared squeezing in a Kerr-nonlinear blackbody.     

Sudden Vanishing of Atomic Dipole-Squeezing in a Kerr Nonlinear Blackbody

The dynamics of atomic dipole momentum and atomic dipole-squeezing effect are investigated inside a Kerr nonlinear blackbody. It is found that in a Kerr nonlinear blackbody, the atomic dipole momentum and its squeezing effect are heavily dependent on the Kerr nonlinear coefficient. It is also found that below a transition temperature T _c , the dipole momentum and its squeezing effect in a Kerr nonlinear blackbody can vanish much faster with time than those in a normal blackbody. Above T _c , the Kerr nonlinear blackbody becomes a normal blackbody, and the dynamics of the atomic dipole momentum and its squeezing effect behaves as those in normal blackbody radiation. The physical origin of the sudden-vanishing phenomenon in a Kerr nonlinear blackbody is also discussed.