THORLABS NE60A-B Neutral Density Filter Ar Coated Od 650-10500 6.0

( Brand: Thorlabs ), ( Manufacturer Part Number: NE60A-B ), ( Type: Filter ), ( Unit Type: Unit ), ( Country Of Origin: Germany )

Review THORLABS Neutral Density Filter Ar Coated Nm Od 6.0

The **Thorlabs NE60A-B 25 Neutral Density (ND) Filter** is a high-performance, broadband optical component designed for precision attenuation of light across an exceptionally wide spectral range, making it an indispensable tool for researchers, engineers, and optical system designers who demand reliability and consistency. Engineered with a **60 mm diameter** and a **25 mm thickness**, this filter is constructed from high-quality optical glass, ensuring mechanical stability and minimal thermal drift during extended use. The **AR (anti-reflection) coating** applied to both surfaces optimizes light transmission efficiency by reducing surface reflections across the specified wavelength range, thereby minimizing unwanted signal loss and maximizing the integrity of experimental results.

This neutral density filter operates with an **optical density (OD) of 6.0**, which translates to an attenuation of **99.9999% (1 part in 1 million)** of incident light, making it ideal for applications requiring extreme attenuation, such as high-sensitivity photometry, laser power reduction, or calibration of sensitive detectors. The **broadband coverage from 650 nm to 10,500 nm** ensures compatibility with a vast array of light sources, including visible, near-infrared, and mid-infrared wavelengths, while maintaining a near-flat spectral response critical for applications where wavelength-dependent attenuation would introduce errors. The **neutral density characteristic** guarantees that the filter attenuates all wavelengths uniformly, preserving the spectral distribution of the transmitted light without introducing color shifts or distortions.

Constructed with precision engineering, the NE60A-B 25 features a **metal ring mount** that facilitates secure integration into optical benches, spectrometers, or laser systems, while its robust design ensures durability under rigorous laboratory conditions. The filter s **high-quality optical polishing** and **coating uniformity** contribute to minimal scattering and absorption losses, further enhancing its performance in demanding applications. Whether used in laser safety systems, optical communication testing, or advanced imaging setups, this filter delivers the precision and reliability required to achieve accurate and reproducible results. Its versatility, combined with Thorlabs reputation for optical excellence, makes it a trusted choice for professionals seeking uncompromising attenuation performance across an unparalleled spectral range.

**Pros and Cons of buying a Thorlabs NE60A-B 25 Neutral Density Filter (AR Coated 650 10,500 nm, OD 6.0)**

### **Pros**

1. **High Optical Density (OD 6.0)** Provides extremely precise attenuation (99.9999% transmission reduction) over a wide range of wavelengths, making it ideal for high-contrast applications where minimal stray light is critical.

2. **Broad Spectral Range (650 10,500 nm)** Covers visible, near-infrared, and mid-infrared wavelengths, making it versatile for applications in laser systems, spectroscopy, imaging, and optical experiments.

3. **Anti-Reflection (AR) Coating** Reduces surface reflections, improving transmission efficiency and minimizing ghosting or back-reflections that could interfere with sensitive measurements.

4. **High-Quality Optical Material** Thorlabs is a reputable manufacturer known for precision-engineered optical components, ensuring durability and consistent performance.

5. **Precision-Mounted in a 60 mm Cage System** The NE60 series is designed for easy integration into optical setups, allowing for stable alignment in modular systems.

6. **Durable Construction** The filter is housed in a robust metal cage system, reducing the risk of damage from handling or environmental factors.

7. **High Stability** Suitable for long-term experiments where consistent attenuation is required, as it is less prone to thermal or mechanical drift compared to some alternative solutions (e.g., variable ND filters).

8. **Compatibility with Common Wavelengths** Particularly useful in applications involving CO lasers (10,600 nm), mid-IR spectroscopy, or high-power laser attenuation.

### **Cons**

1. **Fixed Attenuation (No Adjustability)** Unlike variable neutral density filters, this is a fixed OD 6.0 filter, meaning you cannot adjust the attenuation level. If your application requires different transmission levels, you may need multiple filters or an alternative solution.

2. **Cost** High-quality optical components from Thorlabs are expensive, especially for specialized filters with such broad spectral coverage and high precision. This may be a significant investment for budget-conscious applications.

3. **Potential Polarization Effects** Neutral density filters can sometimes introduce slight polarization dependencies, though Thorlabs AR-coated filters are designed to minimize this. If polarization-sensitive applications are critical, additional testing may be required.

4. **Limited to Specific Mounting Systems** The NE60 series is designed for Thorlabs cage systems. If your setup uses alternative mounting methods (e.g., kinematic mounts, lens tubes), compatibility may require additional adapters or modifications.

5. **Potential for Damage from High Power** While designed for many applications, extremely high-power lasers (beyond the filter s specified limits) could degrade the coating or damage the substrate over time. Always verify power handling capabilities.

6. **No Built-in Protection Against Dust or Contamination** The open cage system means the filter is exposed to the environment, requiring careful handling to avoid scratches or dust accumulation, which could affect performance.

### **Ending Conclusion**

The **Thorlabs NE60A-B 25 Neutral Density Filter (OD 6.0, 650 10,500 nm)** is an excellent choice for applications demanding **precise, fixed attenuation over a wide spectral range** with minimal stray light. Its **high optical density, broad coverage, and compatibility with Thorlabs cage systems** make it ideal for **laser systems, spectroscopy, high-contrast imaging, and mid-IR experiments**. However, its **fixed attenuation, high cost, and lack of adjustability** may limit its usefulness in applications requiring variable transmission or where budget constraints are a concern.

### **Recommendation**

- You need **consistent, high-precision attenuation** across a broad wavelength range (visible to mid-IR).

- Your setup uses **Thorlabs cage systems**, and you require a **permanent, stable solution** without the need for adjustments.

- Your application involves **high-power lasers or sensitive detection** where stray light must be minimized.

- You are working in **research or industrial environments** where reliability and precision are critical.

- You require **adjustable attenuation** (e.g., variable ND filters or wedge filters).

- Your budget is limited, and you can find a lower-cost filter with sufficient OD for your needs.

- Your application involves **polarized light**, and you need to verify minimal polarization effects.

- You are using a **non-Thorlabs mounting system**, and compatibility may require additional adapters.

For most **high-end optical experiments** where **fixed, high-precision attenuation is essential**, this filter is a strong recommendation. However, always **verify power handling limits** and **application-specific requirements** before purchase.

Details:

Orders are shipped to the cardholders billing address. Warranty This item is guaranteed to be as described. Power cords and power adapters are never included unless specifically mentioned. This unit will arrive in the condition shown.

Shipping Buyer pays for all shipping costs. THORLABS NE60A-B 25mm NEUTRAL DENSITY FILTER, AR COATED: 650-1050 NM, OD: 6.0: This lot is for one Thorlabs Neutral Density Filter.

part #: ne60a price

• $45.14

specifications linactuat:

• brand: Thorlabs
• mpn: Ne60a-b
• type: Filter
• unit type: Unit
• country of origin: Germany

shipping linactuat:

• transit: 3-9 Days
• service: USPS Ground Advantage, UPS Ground
• cost: $6.00
• carrier: USPS, UPS
• class: Standard
• type: Calculated

offer linactuat:

• availability: In Stock
• options: Ship-to-home
• started: March 2, 2026
• sold: 0
• quantity: 1

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• city: Las Vegas, Nevada
• rating: 100.0%
• # reviews: 8050

general linactuat:

• condition: Used
• Industrial Automation Motion Controls > Rotary Linear Motion > Other Rotary Linear Motion

returns linactuat:

• policy: No Returns

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