heterodyne wavemeter

简明释义

外差式波长计

英英释义

例句

1.The research lab utilized a heterodyne wavemeter 外差波长计 to measure the frequency of laser emissions accurately.

研究实验室使用了一个heterodyne wavemeter外差波长计来准确测量激光发射的频率。

2.The physicist explained how a heterodyne wavemeter 外差波长计 can provide precise measurements in optical experiments.

物理学家解释了如何使用heterodyne wavemeter外差波长计在光学实验中提供精确的测量。

3.During the demonstration, the heterodyne wavemeter 外差波长计 showed remarkable sensitivity to frequency changes.

在演示过程中，heterodyne wavemeter外差波长计对频率变化表现出显著的敏感性。

4.Engineers often rely on a heterodyne wavemeter 外差波长计 for calibrating high-frequency oscillators.

工程师们通常依赖于heterodyne wavemeter外差波长计来校准高频振荡器。

5.In telecommunications, a heterodyne wavemeter 外差波长计 helps in tuning radio frequencies for optimal signal transmission.

在电信中，heterodyne wavemeter外差波长计有助于调谐无线电频率以实现最佳信号传输。

作文

In the realm of modern physics and engineering, precise measurement of frequency is crucial for various applications, particularly in telecommunications and spectroscopy. One of the most effective tools for this purpose is the heterodyne wavemeter, which allows for the accurate determination of the frequency of light waves. This device operates on the principle of heterodyning, where two frequencies are mixed to produce a new frequency that is easier to measure. The heterodyne wavemeter essentially takes a reference signal and combines it with the signal of interest, resulting in an intermediate frequency that can be analyzed with greater precision.The operation of a heterodyne wavemeter involves several key components, including a laser source, a photodetector, and a mixer. The laser generates a coherent beam of light, which is directed toward the sample. Simultaneously, a stable reference frequency is generated, typically from a local oscillator. When these two signals interact in the mixer, they produce sum and difference frequencies. The difference frequency, often referred to as the beat frequency, is what the wavemeter measures. This frequency is significantly lower than the original frequencies, making it easier to handle and analyze with standard electronic equipment.One of the major advantages of using a heterodyne wavemeter is its ability to achieve high sensitivity and accuracy. Traditional methods of measuring frequency, such as direct counting or using a simple interferometer, can be limited by factors such as noise and resolution. However, the heterodyne technique mitigates these issues by effectively amplifying the signal through mixing, allowing for more reliable readings even in challenging conditions.Furthermore, heterodyne wavemeters are versatile instruments that can be adapted for various wavelengths, ranging from microwave to optical frequencies. This adaptability makes them invaluable in research laboratories, where scientists often need to measure the frequencies of different light sources or radio waves. For instance, in laser spectroscopy, researchers use heterodyne wavemeters to study molecular transitions by precisely measuring the frequency of light absorbed or emitted by molecules.In addition to their applications in research, heterodyne wavemeters also play a significant role in telecommunications. As the demand for faster and more reliable communication systems grows, engineers rely on these devices to ensure that signals are transmitted at the correct frequencies. By accurately measuring and adjusting the frequencies of various channels, heterodyne wavemeters help to maintain the integrity and quality of data transmission over long distances.In conclusion, the heterodyne wavemeter is a powerful instrument that enhances our ability to measure and understand frequencies in both scientific and practical applications. Its unique method of combining signals to produce a measurable beat frequency not only improves accuracy but also expands the range of frequencies that can be studied. As technology continues to advance, the importance of tools like the heterodyne wavemeter will only increase, paving the way for new discoveries and innovations in various fields.

在现代物理和工程领域，频率的精确测量对各种应用至关重要，特别是在电信和光谱学中。异频波计是实现这一目的的最有效工具之一，它允许准确确定光波的频率。该设备基于异频原理，其中两个频率混合以产生一个新的频率，便于测量。异频波计本质上是将参考信号与感兴趣的信号结合，从而产生一个中间频率，可以更精确地分析。异频波计的操作涉及几个关键组件，包括激光源、光探测器和混频器。激光生成一束相干光束，指向样品。同时，通常由本地振荡器生成一个稳定的参考频率。当这两个信号在混频器中相互作用时，产生和差频率。差频率，通常称为拍频，就是波计所测量的频率。这个频率显著低于原始频率，使其更容易处理和分析，使用标准电子设备。使用异频波计的主要优点之一是其能够实现高灵敏度和准确性。传统的测量频率的方法，如直接计数或使用简单的干涉仪，可能会受到噪声和分辨率等因素的限制。然而，异频技术通过混频有效放大信号，从而在困难条件下也能提供更可靠的读数。此外，异频波计是多功能仪器，可以适应各种波长，从微波到光学频率。这种适应性使它们在研究实验室中不可或缺，科学家们常常需要测量不同光源或无线电波的频率。例如，在激光光谱学中，研究人员使用异频波计研究分子跃迁，通过精确测量分子吸收或发射的光的频率。除了在研究中的应用外，异频波计在电信中也发挥着重要作用。随着对更快、更可靠的通信系统需求的增长，工程师依赖这些设备确保信号以正确的频率传输。通过准确测量和调整各个频道的频率，异频波计有助于维持远距离数据传输的完整性和质量。总之，异频波计是一种强大的仪器，增强了我们在科学和实际应用中测量和理解频率的能力。其独特的结合信号以产生可测量的拍频的方法，不仅提高了准确性，还扩展了可以研究的频率范围。随着技术的不断进步，像异频波计这样的工具的重要性只会增加，为各个领域的新发现和创新铺平道路。