In the world of optical communication and optical devices, the 1550nm space AOM series products have attracted much attention due to their unique performance. Among the numerous parameters used to measure its performance, the key parameters such as rise time, diffraction efficiency and extinction ratio are like codes, concealing the crucial information for understanding the performance secrets of this product. Today, let's interpret their meanings together.

Rise time: The key code to speed

The rise time of the light pulse is an extremely important parameter for the 1550nm space AOM series products. It represents the time required for a light pulse to rise from a specific low level to a high level, with the unit being nanoseconds per millimeter. In the 1550nm space AOM series, the rise time of the light pulse is 160 nanoseconds per millimeter.

Why is this parameter so crucial? Imagine that in high-speed optical communication systems or ultrafast laser processing applications, time is everything. The rise time determines the modulation speed of the device on the light beam, which is like the signal light switching speed at a highway intersection. If the rise time is short, it means that the optical signal can complete the conversion from low intensity to high intensity in an extremely short time. Then, in data transmission, a higher data transmission rate can be achieved. In laser processing, the moment when the laser acts on the material can be more precisely controlled, achieving fine processing. Conversely, a longer rise time may cause signal transmission delays or precision errors during the processing. Therefore, the rise time of 160 nanoseconds per millimeter is an important guarantee for the 1550nm space AOM series products to perform well in high-speed application scenarios.

Diffraction efficiency: A measure for the utilization of light energy

The diffraction efficiency, measured as a percentage, in the 1550nm space AOM series products, the diffraction efficiencies of SGT100-1550-1TA and SGT200-1550-0.2TA are both ≥80%. This parameter reflects the device's ability to convert the input light into the required diffracted light.

The diffraction efficiency can be understood as the efficiency of a light energy "transporter". In optical systems, we hope that as much input light as possible can be effectively converted into diffracted light in specific directions and patterns to meet the requirements of subsequent applications. For instance, in a lidar system, high diffraction efficiency means that more laser energy can be emitted in the expected direction and pattern, thereby enhancing the detection range and accuracy of the lidar. In optical signal processing, high diffraction efficiency can ensure that the optical signal loses less energy during modulation, maintaining the strength and quality of the signal. With a diffraction efficiency of over 80%, the 1550nm space AOM series products have achieved a relatively high level in light energy utilization, laying a solid energy foundation for their application in various optical fields.

Extinction ratio: The guardian of signal purity

The extinction ratio of the AOM series products in the 1550nm space has an outstanding performance of more than 1000:1. It is an indicator for measuring the difference in light intensity between the "on" and "off" states of an optical signal.

In the field of optical communication, just as clear sound is needed in a noisy environment, we need pure optical signals. The larger the extinction ratio is, the closer the light intensity of the optical signal approaches zero in the "off" state, that is, the smaller the "noise" of the signal is. In long-distance optical communication transmission, a high extinction ratio can effectively reduce crosstalk between signals and ensure the accuracy and stability of signals during the transmission process. In applications such as optical measurement, a high extinction ratio also helps to improve measurement accuracy and avoid the interference of stray light on measurement results. Therefore, a extinction ratio greater than 1000:1 ensures that the optical signals output by the 1550nm space AOM series products are purer, providing a reliable guarantee for them in application scenarios with extremely high requirements for signal quality.

The three key parameters of rise time, diffraction efficiency and extinction ratio define the performance of the 1550nm space AOM series products from different dimensions. They work in harmony with each other, jointly laying a solid foundation for the outstanding performance of this product in numerous fields such as optical communication and laser processing, and also giving us a deeper understanding of the performance measurement of optical devices.