
( Brand: Thorlabs ), ( Manufacturer Part Number: FELH0800 ), ( Part Type: Filter )
Experience unparalleled optical performance with the Thorlabs FELH0800 25mm Coated Longpass Filter. This high-quality filter is designed to transmit wavelengths longer than 800nm, making it an ideal choice for various applications in the laser and photonics industry.
The FELH0800 filter boasts a 25mm optical diameter, providing ample surface area for efficient light transmission and ensuring compatibility with a wide range of optical systems. Its longpass characteristic allows it to effectively block shorter wavelengths, preventing them from interfering with your experimental setup.
Thorlabs' FELH0800 filter is coated with a proprietary multi-layer anti-reflection coating that minimizes unwanted reflections, thereby maximizing the transmitted light. This coating also ensures excellent durability and resistance to scratching, enabling the filter to maintain its superior optical properties over time even under rigorous usage conditions.
With an optical density (OD) of 5.0 at the center wavelength of 800nm, the FELH0800 filter offers exceptional rejection of light below 800nm, ensuring superior performance in applications such as laser diode pumping, fluorescence microscopy, and other spectroscopic measurements.
In summary, the Thorlabs FELH0800 25mm Coated Longpass Filter is a versatile and reliable solution for your optical filtration needs. Its large diameter, excellent coating, and high optical density make it an indispensable tool for researchers, engineers, and technicians working in a variety of fields, including laser technology, photonics, and spectroscopy.
1. High Transmission Efficiency: The Optical Density (OD5) indicates a high rejection of wavelengths below 800nm, while maintaining a relatively high transmission for wavelengths around 800nm.
2. Large Aperture: The 25mm aperture allows for a high throughput of light, making it suitable for use in various applications that require a significant amount of light.
3. Quality Assurance: Thorlabs is a reputable company known for its high-quality optical components, ensuring that the filter is built to last and perform consistently over time.
4. Coating: The filter is coated, which enhances its durability and reduces the risk of damage during handling and use.
Cons:1. Narrow Wavelength Range: The filter is specifically designed for wavelengths around 800nm, which may limit its versatility in applications that require a broader wavelength range.
2. Cost: As a premium product from a reputable manufacturer, the filter may be more expensive compared to similar products from less established brands.
3. Potential for Reflections: While the coating helps reduce the risk of damage, it can also cause reflections, which may impact the overall quality of the transmitted light in some applications.
Conclusion:The Felh0800 Thorlabs 25mm Coated Longpass Filter (Wavelength 800nm, OD5) is an excellent choice for applications that require a high rejection of wavelengths below 800nm and a significant throughput of light. Its large aperture, high quality, and coating make it a reliable and durable option. However, its narrow wavelength range and potential for reflections are worth considering, especially if your application requires a broader wavelength range or minimal reflections.
Recommendation:If the filter's specifications align with your application's requirements, we recommend the Felh0800 Thorlabs 25mm Coated Longpass Filter (Wavelength 800nm, OD5). However, we encourage you to carefully consider the cons to ensure that this filter will meet your needs. If necessary, explore options from other manufacturers that offer similar specifications at a lower price point or with a broader wavelength range.
Hard-coated longpass filters Thorlabs price: 161 more details:Thorlabs. 0mm premium longpass filter, cut-on wave length : 800 nm od inch optic great laser filter for 785 and below. Felh0800 cfm . Part number.