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Part Number |
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T>90%@1000-1030nm+R>95%@1050nm Shortpass Dichroic Mirror(SPDM1040)
SO3060346
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This SPDM1040 shortpass dichroic mirror is designed to transmit near-infrared (NIR) light in the 1000–1030 nm range while reflecting longer wavelengths, specifically targeting the 1050 nm region with high efficiency.
It is suitable for precision laser systems, such as those utilizing Ytterbium-doped fiber lasers or pulsed lasers where distinct narrow bands within the 1-micron range must be separated. It helps separate beams by wavelength, effectively allowing shorter NIR signals to pass through while reflecting 1050 nm light, which is critical for beam combining, wavelength-division multiplexing, or protecting sensitive components from specific laser lines.
Key specifications:
- Wavelength / main spec: Transmits 1000–1030 nm; Reflects 1050 nm
- Bandwidth / transition spec: Shortpass dichroic transition between 1030 nm and 1050 nm
- Transmission / blocking: T >90% (1000–1030 nm); R >95% (@1050 nm)
- Format / custom option: Available in mounted (dia 12.5–25 mm) and unmounted (25x36 mm to 35x52 mm) formats
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Product Faqs
What does a dichroic mirror do?
A dichroic mirror separates light by wavelength. It is designed to reflect one wavelength range while transmitting another wavelength range.
For example, a dichroic mirror may reflect a laser wavelength while transmitting a visible alignment beam, fluorescence signal, or another laser wavelength. The exact function depends on the reflection band, transmission band, and angle of incidence.
What angle of incidence should I use?
Most dichroic mirrors are designed for a specified angle of incidence, commonly 45°, unless otherwise stated.
Can this dichroic mirror be used to combine or separate laser beams?
Yes. Dichroic mirrors are commonly used for laser beam combining and beam separation when the wavelengths are different enough and the reflection/transmission bands match the system requirement.
For example, one wavelength may be reflected at 45°, while another wavelength passes through the mirror. Before ordering, please confirm the laser wavelengths, AOI, beam size, and required reflection/transmission performance.
Not sure if this product fits your setup?
Whether you are replacing an existing part or building a new system, send us:
- Original part number or target specification
- Required size and quantity
- Application or system goal
We will help check product fit or suggest a stock/custom alternative.