Tender For Purchase And Installation Of Various Optical Items, kolkata-West Bengal

Purchase And Installation Of Various Optical Items -Post Holder Made Of Black-Anodized Aluminum Having Length L=50 Mm And Thru Hole Diameter Ø12.7 Mm With Spring-Loaded Hex-Locking Thumbscrew And1 / 4-20 ( M6 ) Tapped Hole On Bottom. Thepost Holders Should Be Designed With A Wide, Square Relief Cut That Provides Two Lines Of Contact For Highly Stable Post Mounting.The Post Holders Must Be Compatible With The Metric Table. 2 Virtually Non-Magnetic 303 Stainless Steel ( Ss ) Optical Post Of Length L = 75 Mm And Diameter Ø12.7 Mm With One Top-Located M4 Removable Setscrew And One Bottom-Located M6 Tapped Hole. The Posts Must Be Compatible With The Metric Table. 3 Post Holder Made Of Black-Anodized Aluminum Having Length L=75 Mm And Thru Hole Diameter Ø12.7 Mm With Spring-Loaded Hex-Locking Thumbscrew And1 / 4-20 ( M6 ) Tapped Hole On Bottom. Thepost Holders Should Be Designed With A Wide, Square Relief Cut That Provides Two Lines Of Contact For Highly Stable Post Mounting. The Post Holders Must Be Compatible With The Metric Table. 4 Ø1 Low-Gdd Beam Splitter For Second Harmonic Of Ultrafast Ti: Sapphire Lasers ( Reflects 360-440 Nm And Transmits 700-900 Nm ) . The Group Delay Dispersion ( Gdd ) Of The Beam-Splitter Should Be<20 Fs2 Over The Reflected Wavelength Range. It Must Be Coated On One Surface Such That It Has High Reflectance Of S-Polarized Light In The Second Harmonic Wavelength Range And Low Reflectance Of P-Polarized Light In The Fundamental Wavelength Range. The Coatings Are Needed To Be Designed For Using At A 56° Angle Of Incidence ( Aoi ) To Minimize The Reflectance Of The Fundamental Component. 5 36 Long, Rg-58 Bnc Coaxial Cable ( Bnc Male To Bnc Male ) With Cable Outer Diameter Ofø0.2. It Should Have Tarnish-Resistant Brass Body And Stress-Relief Connectors. The Electrical Requirements For The Cable Are 50 ? ± 3 ? Impedance, Dc - 4.0 Ghz Frequency Range, 500Vrms Working Voltage. 6 60Long, Rg-58 Bnc Coaxial Cable ( Bnc Male To Bnc Male ) With Cable Outer Diameter Of Ø0.2. It Should Have Tarnish-Resistant Brass Body And Stress-Relief Connectors. The Electrical Requirements For The Cable Are 50 ? ± 3 ? Impedance, Dc - 4.0 Ghz Frequency Range, 500Vrms Working Voltage. 7 120Long, Rg-58 Bnc Coaxial Cable ( Bnc Male To Bnc Male ) With Cable Outer Diameter Of Ø0.2. It Should Have Tarnish-Resistant Brass Body And Stress-Relief Connectors. The Electrical Requirements For The Cable Are 50 ? ± 3 ? Impedance, Dc - 4.0 Ghz Frequency Range, 500Vrms Working Voltage. 8 N-Bk7 Plano-Convex Mounted Lens Having F = 50 Mm And Optic Diameterø1.5Witharc: 650-1050 Nm ( B Coating ) To Provide<0.5% Average Reflectance Per Surface Over The Specified Wavelength Range. Thelenses Are Needed To Be Mounted Insm1.5Compatiblethreaded Mounts. 9 Ø31.8 Mm Studded Pedestal Base Adapter Made Of Solid 303 Stainless Steel With 1 / 4-20 ( M6 ) -Threaded Studs Which Is Compatible With Ø1 / 2 Post Holders ( Compatible With Metric Table ) . Its Base Must Be Magnetic To Securely Hold It In Place Without Clamping To An Optical Table. 10 Clamping Fork With1.24 Long Counterbored Slot And 1 / 4-20 ( M6 ) Captive Screws. The Fork Should Be Made Of Solid 303 Stainless Steel And At Least Be Able To Create Three Points Of Contact With The Optical Table For High Stability. 11 3.5Mm Thick, Premium Bandpass Filter With Outer Diameter Ø25 Mm Having Cwl = 400 ± 8 Nm, Fwhm = 40 ± 8 Nm. The Filter Should Be Durable And Hard-Coated With Dielectric Coatings On A Uv Fused Silica Substrate.Each Filter Is Needed To Be Housed In A Black Anodized Aluminum Ring Forblocking Od By Limiting Scattering. 12 Short Pass Filter Having Outer Diameter Ø1 And Cut-Off Wavelength 600 Nm. The Filter Should Bemounted In A Black Anodized Aluminum Ringthat Is Labeled With An Arrow Indicating The Design Propagation Direction. The Filter Should Be Ideal For Raman Spectroscopyand Photometry. 13 Annular Obstruction Target Having Diameter Of 50 Μm And Constant Pinhole Diameter Of 1 Mm. It Should Be Made Of 0.5 Mm Thick Quartz Glass Substrate And Aperture Annulus Made Of Ar Coated Chrome Mask With An Optical Density ? 6 That Minimize Back Reflections. For Fine Alignment Purpose, It Is Needed To Have Ø1Housing For Beingmounted In The Translation Mounts. The Obstruction Must Be Ideal For High-Pass Spatial Filtering Applications And Should Be Usable In Pre-Assembled Spatial Filter System. 14 Lever-Actuated, Continuously Variable, Post-Mountable Standard Iris With Black-Anodized Aluminum Housing Having Minimum Aperture Of Ø1.0Mmand Maximum Aperture Of Ø25.0 Mm. It Should Have Black Spring Steel Leaves And 8-32 ( M4 ) Threaded Stud At The Bottom For Post Mounting. 15 Flip Mount Adapter Made Of Black-Anodized Aluminum ( Compatible With Metric Table ) . 16 Lens Tissues - 50 Booklets With 25 Sheets Per Booklet: Extremely Soft, Premium Grade Sheetssingle Sheet Dimension: 4.9 X 2.9 ( 124 X 73 Mm ) , Should Meet U.S. Government Lens Tissue Specification A-A-50177B.

Sr No	CorrigendumDate	Corrignedum	CorrigendumType	NewSubmissionDate
1	27-Jan-2023	Bid Auto Extn Corrigendum	Bid Auto Extn Corrigendum	03-02-2023

Refer document

Refer document

Refer document

Name of Work:PURCHASE AND INSTALLATION OF VARIOUS OPTICAL ITEMS

Sl. No.	Item Description
1	Post Holder made of black-anodized Aluminum having length L=50 mm and thru hole diameter Ø12.7 mm with Spring-Loaded Hex-Locking Thumbscrew and1/4"-20 (M6) Tapped Hole on Bottom. Thepost holders should be designed with a wide, square relief cut that provides two lines of contact for highly stable post mounting.The Post Holders must be compatible with the Metric Table.
2	Virtually non-magnetic 303 stainless steel (SS) Optical Post of length L = 75 mm and diameter Ø12.7 mm with one Top-Located M4 Removable Setscrew and one Bottom-Located M6 Tapped Hole. The Posts must be compatible with the Metric Table.
3	Post Holder made of black-anodized Aluminum having length L=75 mm and thru hole diameter Ø12.7 mm with Spring-Loaded Hex-Locking Thumbscrew and1/4"-20 (M6) Tapped Hole on Bottom. Thepost holders should be designed with a wide, square relief cut that provides two lines of contact for highly stable post mounting. The Post Holders must be compatible with the Metric Table.
4	Ø1" Low-GDD Beam splitter for Second Harmonic of Ultrafast Ti: Sapphire Lasers (reflects 360-440 nm and transmits 700-900 nm). The Group Delay Dispersion (GDD) of the Beam-Splitter should be<20 fs2 Over the Reflected Wavelength Range. It must be coated on one surface such that it has high reflectance of s-polarized light in the second harmonic wavelength range and low reflectance of p-polarized light in the fundamental wavelength range. The coatings are needed to be designed for using at a 56° angle of incidence (AOI) to minimize the reflectance of the fundamental component.
5	36" Long, RG-58 BNC Coaxial Cable (BNC Male to BNC Male) with Cable Outer Diameter ofØ0.2". It should have Tarnish-Resistant Brass Body and Stress-Relief Connectors. The electrical requirements for the cable are 50 ? ± 3 ? Impedance, DC - 4.0 GHz Frequency Range, 500VRMS Working Voltage.
6	60"Long,RG-58 BNC Coaxial Cable (BNC Male to BNC Male) with Cable Outer Diameter of Ø0.2". It should have Tarnish-Resistant Brass Body and Stress-Relief Connectors. The electrical requirements for the cable are 50 ? ± 3 ? Impedance, DC - 4.0 GHz Frequency Range, 500VRMS Working Voltage.
7	120"Long,RG-58 BNC Coaxial Cable (BNC Male to BNC Male) with Cable Outer Diameter of Ø0.2". It should have Tarnish-Resistant Brass Body and Stress-Relief Connectors. The electrical requirements for the cable are 50 ? ± 3 ? Impedance, DC - 4.0 GHz Frequency Range, 500VRMS Working Voltage.
8	N-BK7 Plano-Convex Mounted Lens having f = 50 mm and optic diameterØ1.5"withARC: 650-1050 nm (B Coating) to provide<0.5% average reflectance per surface over the specified wavelength range. Thelenses are needed to be mounted inSM1.5compatibleThreaded Mounts.
9	Ø31.8 mm Studded Pedestal Base Adapter made of solid 303 stainless steel with 1/4"-20 (M6)-threaded studs which is compatible with Ø1/2" post holders(compatible with Metric table). Its base must be Magnetic to securely hold it in place without clamping to an optical table.
10	Clamping Fork with1.24" Long Counterbored Slot and 1/4"-20 (M6) captive screws. The Fork should be made of solid 303 stainless steel and at least be able to create three points of contact with the optical table for high stability.
11	3.5mm Thick, Premium Bandpass Filter with outer diameter Ø25 mm having CWL = 400 ± 8 nm, FWHM = 40 ± 8 nm. The filter should be durable and hard-coated with dielectric coatings on a UV fused silica substrate.Each filter is needed to be housed in a black anodized aluminum ring forblocking OD by limiting scattering.
12	Short pass Filter having Outer Diameter Ø1" and Cut-Off Wavelength 600 nm. The filter should bemounted in a black anodized aluminum ringthat is labeled with an arrow indicating the design propagation direction. The filter should be ideal for Raman Spectroscopyand Photometry.
13	Annular Obstruction Target having diameter of 50 µm and constant pinhole diameter of 1 mm. It should be made of 0.5 mm thick quartz glass substrate and aperture annulus made of AR coated chrome mask with an optical density ? 6 that minimize back reflections. For Fine Alignment purpose, it is needed to have Ø1"Housing for beingmounted in the Translation Mounts. The obstruction must be ideal for High-Pass Spatial Filtering Applications and should be usable in Pre-Assembled Spatial Filter System.
14	Lever-Actuated, Continuously Variable,Post-Mountable Standard Iris with black-anodized Aluminum Housing having Minimum Aperture of Ø1.0mmand Maximum Aperture of Ø25.0 mm. It should have Black Spring Steel Leaves and 8-32 (M4) Threaded Stud at the bottom for Post Mounting.
15	Flip Mount Adapter made of black-anodized Aluminum (compatible with Metric table).
16	Lens Tissues - 50 Booklets with 25 Sheets per Booklet: Extremely Soft, Premium Grade Sheets Single Sheet Dimension: 4.9" x 2.9" (124 x 73 mm), should meet U.S. Government Lens Tissue Specification A-A-50177B.