{"id":57638,"date":"2025-06-26T14:48:49","date_gmt":"2025-06-26T14:48:49","guid":{"rendered":"https:\/\/photonics.laser2000.co.uk\/?post_type=product&p=57638"},"modified":"2025-12-17T14:36:30","modified_gmt":"2025-12-17T14:36:30","slug":"dichroic-polarisers","status":"publish","type":"product","link":"https:\/\/stagingphotonics.laser2000.co.uk\/?product=dichroic-polarisers","title":{"rendered":"Dichroic Polarisers"},"content":{"rendered":"

A dichroic has selective absorption of one polarisation state, transmitting the other.<\/strong>\u00a0\u00a0 Available in lower cost polymers and higher precision glass.\u00a0 Suitable for lower power (~W’s),\u00a0 larger aperture applications<\/p>\n

Polymer<\/u><\/strong><\/p>\n

DP, DPM<\/strong> Polarisers are precision linear polarisers using dichroic polymer sheet polariser material laminated between high quality glass substrates. For visible wavelength polarisers, this construction produces a peak-to-valley transmitted wavefront distortion of less than\u00a0 \u03bb\/5. Various polariser materials are used to cover wavelengths within 320 and 2000 nm. Both visible and near infrared polarisers are supplied with a high-efficiency, broadband antireflection (AR) coating; single-layer AR coatings are optional on our ultraviolet polarisers.<\/p>\n

The GPM<\/strong> series is extremely broadband (300-2700nm) with up to 1,000,000:1 contrast ratio, rivalling the span of Glan-Thompson polarisers but in a compact design.\u00a0 Wide acceptance angle (\u00b140\u00b0) and large clear aperture<\/p>\n

Dichroic Glass<\/b><\/span><\/p>\n

PPM, UPM and UHP<\/strong> based on Dichroic Glass.\u00a0 <\/b>The PPM is in response to improved contrast in the NIR region, contrast ratio’s as high as 10,000:1,<\/p>\n

Custom wavelength ranges from 630 to 1580 nm with 60 to 80nm bandpasses and sizes from 10 to 25 mm are available.<\/p>\n

The UPM and UHP<\/strong> are ultra- high contrast (>100,000:1) polarisers the UPM being mounted on the UHP being unmounted, both can be laminated or unlaminated with unlaminated parts usable to 400\u00b0C.\u00a0 AR coating options available from 400-1700nm.<\/p>\n

Dichroic Circular<\/b><\/span><\/p>\n

CP, CPM<\/strong> Circular polarisers transmit either left\u2010circular polarised light or right\u2010circular polarised light for an input beam of any polarization state.\u00a0 When circularly polarised light is reflected, it\u2019s propagation direction reverses, changing left\u2010circular polarisation to right circular polarisation and vice\u2010versa<\/p>\n

Meadowlark Optics Dichroic Circular Polarisers consist of a dichroic linear polariser and true zero-order quarter-wave retarder. Precisely aligning the retarder fast axis at 45\u00b0 to the linear polarisation direction ensures optimum performance.<\/p>\n","protected":false},"excerpt":{"rendered":"

A dichroic has selective absorption of one polarisation state, transmitting the other.\u00a0\u00a0 Available in lower cost polymers and higher precision glass.\u00a0 Suitable for lower power (~W’s),\u00a0 larger aperture applications<\/p>\n","protected":false},"featured_media":57679,"template":"","meta":{"_acf_changed":false,"footnotes":""},"product_brand":[],"product_cat":[1984],"product_tag":[],"class_list":{"0":"post-57638","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-polarisers-polarising-prisms-and-beamsplitters","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-variable"},"acf":[],"yoast_head":"\nDichroic Linear & Circular Polarisers - Laser 2000<\/title>\n<meta name=\"description\" content=\"Polymer sheet, glass laminated polymer or dichroic glass. 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