Tender For Procurement Of Electro Optic Modulator, Bengaluru Urban-Karnataka

Tender For Procurement Of Electro Optic Modulator; 1 Phase Modulated Electro-Optic Modulator • Resonant, free-space electro-optic PHASE modulator for NIR Laser applications • Optimised resonance frequency: 25 MHz +/-0.5MHz • RF bandwidth (-3dB): typ. < 2% of optimised frequency • RF connector: SMA-f,straight with impedance @ 25MHz of 50 Ohms • Return loss (S11): typ. < -10dB • Housing dimensions: 40x40x40 mm^3 | • Mounting: 3x M4 for s- & p-pol. • Crystal aperture: 3x3mm^2, CA ≥ 90% • Wavelength Range: 630 - 1100 nm (R_avg < 1%, T_avg > 95%) (will work with 780 nm and 960 nm) • Wavefront distortion (WFD): < λ/6 (633nm). • Max. recommended laser intensity @ λ1, λ2: 0.1 W/mm^2 • Laser insertion loss @ λ1, λ2< 2% • Modulation efficiency @ (1rad): typ. (14|16 +/-1) dBm • Max. RF power: 0.5W • Applications: Laser Frequency Stabilisation (PDH) locking 2 2 Phase modulated Electro-Optic Modulator • Resonant, high-Q electro-optic PHASE modulator • Optimised resonance frequency: 6.835 GHz • RF bandwidth (-3dB): typ. 30 MHz • Frequency tuning range: min. 6.835 GHz +/- 40 MHz (incl. tuning tool) | No. of tuners: 2 • RF connector: SMA-f,straight • Impedance: 50 Ohm • Return loss: typ. < -30dB • Housing: 60x30x18 mm^3 • Mounting: 4x M2.5 & 1x M4 1 • Aperture: 2x2 mm^2 • Laser wavelength λo: 780nm • AR @ λo: R < 0.5% • Wavefront distortion: < λ/6@ (633nm) • Recommended max. laser intensity @ λo: < 5W/mm^2 • Insertion loss (LIL) @ λo: < 3% • Required RF power for 1rad @ {λo}: (30 +/- 1) dBm • Max. RF power: 5W • Application: Raman Transitionsin Rb 87 3 RF- Driver • RF Driver for resonant, high-Q electro-optic modulators • Frequency resolution.: < 2 kHz, • RF amplifier maximum power ≥ 32 dBm • Compatible with Phase modulated Electro-Optic Modulator, optimised at resonance frequency: 6.835 GHz • RF level resolution: 0.1dB • Output connector: SMA-f, bulkhead,50 Ohms • Full front-panel control and display controllable (USB) • Including Q-Lock (automatic EOM resonance lock & tracking) • Standalone benchtop version • Powersupply: 90- 260VAC, 50Hz 1 4 EOM alignment Stage • EOM alignment stage for precision alignment of the EOM concerning the laser beam • 5-axisstage 4 5 Amplitude Modulated Electro-Optic Modulators • Resonant, free-space electro-optic amplitude modulator • Could be derived at a fixed resonance frequency within 0.1 - 2 MHz • Optimised resonance frequency: 1 MHz (+/- 50kHz) • RF bandwidth (-3dB): typ. < 2% of 1MHz • RF connector: SMA-f,straight • Impedance: 50 Ohms • Return loss < -10dB • Mounting: 4x M2.5 (bottom) • Optical wavelength will be working at: 480 nm • Wavefront distortion: < λ/8 • DC extinction ratio: typ. ≥ 25dB • Maximum laser intensity: 5W/mm^2 • Required RF power for full modulation: 19 +/-1 dBm • Maximum RF power: 1W 1 6 Amplitude Modulated Electro-Optic Modulators • Resonant, free-space electro-optic amplitude modulator • Could be derived at a fixed resonance frequency within 0.1 - 2 MHz • Optimised resonance frequency: 1 MHz (+/- 50kHz) • RF bandwidth (-3dB): typ. < 2% of 1MHz • RF connector: SMA-f,straight • Impedance: 50 Ohms • Return loss < -10dB • Mounting: 4x M2.5 (bottom) • Optical wavelength will be working at: 780 nm • Wavefront distortion: < λ/8 • DC extinction ratio: typ. ≥ 25dB • Maximum laser intensity: 5W/mm^2 • Required RF power for full modulation: 19 +/-1 dBm • Maximum RF power: 1W 1 7 RF Driver • RF Driver for resonant, high-Q free-space electro-optic modulators • Frequency range: 0.1-2 MHz • Resolution: < 1 kHz • Power output: max 1W. • RF level resolution: 0.1dB • Output connector: SMA-f, bulkhead, 50 Ohms • Full front-panel control via display • Standalone benchtop version • powersupply 90-260VAC, 50Hz 2

Sr No	CorrigendumDate	Corrigendum	CorrigendumType	NewSubmissionDate
1	01-09-2025	CORR2-NIT-240418-EOM-25-26	Date	08-09-2025
2	18-08-2025	CORRI-NIT-250418-EOM-25-26	Date	01-09-2025

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INR 50 Lakhs /-