SIGMAKOKI

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PMH/PSMH
Wavelength range
Diameter φD
Thickness t
Material
Parallelism
Transmittance (Average P and S)
Laser Damage Threshold*
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We offer Half-Mirror optics designed for use in Ultraviolet, Visible and Infrared wavelengths. They can be used for both transmission and divergence of multi-wavelength lasers and white light sources. Ultra broadband half-mirrors are used for spectrometry applications.

◦PMH series have 4 types of ultra-broadband optics suitable for UV to IR applications.
◦PSMH series have 3 types of ultra-broadband optics for ranges from Visible to NIR, which are used for optical communication applications.
◦Dielectric multi-layer coated optics are an excellent choice for beam deviation applications because of its low absorption capabilities.
◦Its low polarization characteristic can also be applied in beam deviation with a linear polarization laser or a laser light.
◦Sigma Koki produces plate from optics that are light weight and maintains low dispersion with less aberration.
◦Both wedge and plate type mirrors are made to have “low ghosting and low interference effects”.

Related product
Products
Technical Data
Documents/Downloads
Guide

▶For customization, we can offer different sizes, wavelengths and deviation ratios.
W3802
Please contact our Sales Division with your requests.
▶For guaranteed higher reflectance accuracy and higher transmittance optics, please contact us.
▶An arrow mark will be printed on the thick side of the wedge plate to indicate the surface of the mirror.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶When applying laser linear polarized light, the direction of polarization may affect the amount of reflectance and transmittance. For a divergence usage of 1:1 ratio, ensure the direction of polarization is set to 45 degrees or use a circular polarizer.
▶When a laser light transmits through the optics, the light path may shift by a few millimeters horizontally due to refraction and the thickness of the wedge plate.
▶The transmittance wavelength properties may be different if the incident angle is other than 45 degrees.
▶Please check the arrow mark on the side of the wedge plate that indicates the coated surface.
▶The phase difference of incident light cannot be preserved on light transmittance and reflectance; Please use a wave plate to compensate.

Common Specifications
MaterialBK7 , Synthetic fused silica
Surface flatnessλ/10
CoatingFront surface ; Dielectric multilayer coating
Rear surfaces ; Anti-reflection coating
Incident angle45°
Divergence ratio
(reflectance : transmittance)
1 : 1
Surface Quality (Scratch-Dig)10−5
Clear apertureCircle that inscribed in a square of 90% of the dimensions
Outline Drawing

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Schematic

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Optical Parallel

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Wedged Substrate

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Typical Transmittance Data
■PMH-25/7

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T: Transmission
■PMH-3/10

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T: Transmission
■PMH-6/18

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T: Transmission
■PMH-4/20

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T: Transmission
■PSMH-550

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T: Transmission
■PSMH-800

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T: Transmission
■PSMH-1400

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T: Transmission
Spec
Compare
Part Number
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    JP Yen Stock Qty
PMH-25.4C03-10-25/7
PMH-30C03-10-25/7
PMH-50C05-10-25/7
PMH-25.4C03-10-3/10
PMH-30C03-10-3/10
PMH-50C05-10-3/10
PMH-25.4C03-10-6/18
PMH-30C03-10-6/18
PMH-50C05-10-6/18
PMH-25.4C03-10-4/20
PMH-30C03-10-4/20
PMH-50C05-10-4/20
PSMH-25.4C03-10-550
PSMH-30C03-10-550
PSMH-30C05-10W-550
PSMH-40C04-10-550
PSMH-50C05-10-550
PSMH-50C08-10W-550
PSMH-30C03-10-800
PSMH-30C05-10W-800
PSMH-50C05-10-800
PSMH-50C08-10W-800
PSMH-30C03-10-1400
PSMH-30C05-10W-1400

250 - 700nm

φ25.4mm

3mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

250 - 700nm

φ30mm

3mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

250 - 700nm

φ50mm

5mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

300 - 1000nm

φ25.4mm

3mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

300 - 1000nm

φ30mm

3mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

300 - 1000nm

φ50mm

5mm

Synthetic fused silica

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

600 - 1800nm

φ25.4mm

3mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

600 - 1800nm

φ30mm

3mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

600 - 1800nm

φ50mm

5mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

400 - 2000nm

φ25.4mm

3mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

400 - 2000nm

φ30mm

3mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

400 - 2000nm

φ50mm

5mm

BK7

<5″

50±10% (average with respect to wavelength.)

0.5J/cm2

400 - 700nm

φ25.4mm

3mm

BK7

<5″

50±5% (average with respect to wavelength.)

2.1J/cm2

400 - 700nm

φ30mm

3mm

BK7

<5″

50±5% (average with respect to wavelength.)

2.1J/cm2

400 - 700nm

φ30mm

5mm

BK7

1°±5′

50±5% (average with respect to wavelength.)

2.1J/cm2

400 - 700nm

φ40mm

4mm

BK7

<5″

50±5% (average with respect to wavelength.)

2.1J/cm2

400 - 700nm

φ50mm

5mm

BK7

<5″

50±5% (average with respect to wavelength.)

2.1J/cm2

400 - 700nm

φ50mm

8mm

BK7

1°±5′

50±5% (average with respect to wavelength.)

2.1J/cm2

700 - 900nm

φ30mm

3mm

BK7

<5″

50±3%(800nm)

2.1J/cm2

700 - 900nm

φ30mm

5mm

BK7

1°±5′

50±3%(800nm)

2.1J/cm2

700 - 900nm

φ50mm

5mm

BK7

<5″

50±3%(800nm)

2.1J/cm2

700 - 900nm

φ50mm

8mm

BK7

1°±5′

50±3%(800nm)

2.1J/cm2

1300 - 1550nm

φ30mm

3mm

BK7

<5″

50±3%(1400nm)

2.1J/cm2

1300 - 1550nm

φ30mm

5mm

BK7

1°±5′

50±3%(1400nm)

2.1J/cm2

RoHS  

¥48,450

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¥48,450

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¥68,400

CONTACT
US
RoHS  

¥56,050

LOW
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¥56,050

LOW
RoHS  

¥79,800

CONTACT
US
RoHS  

¥56,050

IN STOCK
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¥56,050

LOW
RoHS  

¥79,800

LOW
RoHS  

¥61,750

LOW
RoHS  

¥61,750

LOW
RoHS  

¥90,250

LOW
RoHS  

¥20,000

LOW
RoHS  

¥21,850

CONTACT
US
RoHS  

¥21,850

LOW
RoHS  

¥25,650

LOW
RoHS  

¥30,400

CONTACT
US
RoHS  

¥30,400

LOW
RoHS  

¥21,850

LOW
RoHS  

¥21,850

IN STOCK
RoHS  

¥30,400

IN STOCK
RoHS  

¥30,400

LOW
RoHS  

¥21,850

LOW
RoHS  

¥21,850

CONTACT
US