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Faraday Optical Isolator, Free-Space

Faraday Optical Isolator, Free-Space
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Faraday Optical Isolator, Free-Space - 1

L a s e r s 37 HIGH ENERGY PULSED TUNABLE LASERS LASERS CW / QUASI-CW SOLID Q-SWITCHED DPSS LASERS ULTRAFAST LASERS LASER ACCESSORY KITS STATE LASERS DIODE LASERS GAS LASERS LASER ACCESSORIES Email: sales@spectra-physics.com • Web: spectra-physics.com Faraday Isolators A Faraday Isolator is essentially a uni-directional light valve. It is used to protect a laser source from destabilizing feedback or actual damage from back-reflected light. Newport offers Faraday Isolators packaged in a compact cylindrically shaped magnetooptic device with a base plate for ease of mounting into an optical train. Our offering includes wavelength ranges of 500 nm to 1030 nm, 1030 nm to 1080 nm and Broadband (Ti:Sapphire) Isolators. The 500 nm to 1030 nm isolators are offered in a lowpower (LP) and medium-power (MP) versions. The LP Series utilizes field proven, high efficiency Corning Polarcor™ polarizers; ideal for laser diode applications. The MP Series uses a higher damage threshold BK-7 polarizing beamsplitter (PBS) and provide double escape ports for applications where rejected power exceeds 0.5 W. The 1030 nm to 1080 nm versions offer high pulse damage thresholds in the NIR range. The broadband isolators are ideal for individual amplifier isolation in a Ti:Sapphire chain while maintaining the ability to tune rapidly over the amplifier bandwidth or isolating a femtosecond oscillator from a Ti:Sapphire regenerative amplifier. These provide the advantage of operating over a wide spectral range without requiring manual adjustments. • High Verdet constant • Low absorption coefficients • High damage thresholds • Tunability over a broad spectral range Wavelength Tunable LP Series Specifications Model ISO-04-650-LP ISO-04-780-LP ISO-04-850-LP ISO-04-980-LP Clear Aperture (mm) 4 Center Wavelength (nm) 650 780 850 980 Spectral Range (nm) 630–730 740–840 840–960 960–1030 Isolation (dB) @ 25°C 30–25 30–38 30–38 30–38 Transmission (%) @ 25°C >75 >80 >80 >90 CW Damage Threshold (W/cm2) 25 Polarizer Type Dichroic Glass Polarizer 1) LP series isolators utilize Corning PolarcorTM and no escape port option is available with the low power isolators. 2) LP series isolators have a temperature dependence. Specifications quoted above are for 25°C ±8°C. 3) Storage temperature for these isolators should not exceed 70°C 4) Wavelength tuning: Please consult Users Guide for instruction for tuning of these isolators for a specific wavelength. 5) These devices contain strong magnets. Do not attempt to disassemble your Faraday isolator. Wavelength Tunable MP Series Specifications Model ISO-04-532-MP ISO-04-650-MP ISO-04-780-MP ISO-04-850-MP ISO-04-980-MP Clear Aperture (mm) 4 Center Wavelength (nm) 532 650 780 850 980 Spectral Range (nm) 500–600 600–680 720–830 800–900 900–1030 Isolation (dB) @ 25°C 27–32 27–32 27–35 27–35 27–35 Transmission (%) @ 25°C >88 >88 >88 >88 >88 CW Damage Threshold (kW/cm2) 2 Pulse Pulse Damage Threshold (J/cm2) 1 Polarizer Type PBS Cube Polarizer 1) Escape Ports: MP Isolators contain PBS cubes with double escape ports on the input and output of the isolator. For rejected powers exceeding 0.5 W the escape ports should be used. Please make sure beams exiting the escape ports are properly terminated. 2) MP series isolators have a temperature dependence. Specifications quoted above are for 25°C ±8°C. 3) Storage temperature for MP series isolators should not exceed 70°C. 4) Wavelength tuning: Please consult the Users Guide for instructions on wavelength tuning of these isolators. 5) These devices contain strong magnets. Do not attempt to disassemble your Faraday isolator. 6) For incident powers >2 KW/cm2 CW or 1 J/cm2 for a 10 ns pulse, please contact Newport.

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Faraday Optical Isolator, Free-Space - 2

38 L a s e r s Phone: 1-800-775-5273 • Fax: 1-650-964-3584 DIODE LASERS CW / QUASI-CW SOLID STATE LASERS HIGH ENERGY PULSED LASER ACCESSORY KITS ULTRAFAST LASERS Q-SWITCHED DPSS LASERS LASERS LASER ACCESSORIES GAS LASERS TUNABLE LASERS Broadband Isolator Specifications Model ISO-05-800-BB-G ISO-05-800-BB-P Clear Aperture (mm) 5 5 Center Wavelength (nm) 800 800 Spectral Range (nm) 720–950 720–950 Isolation (dB) @ 25°C 30 30 dB Transmission (%) @ 25°C 92 88 Pulse Damage Threshold (MW/cm2) For a 10 ns pulse 100 100 Polarizer Type Glan Laser Calcite PBS Cube Rotating Medium Terbium Gallium...

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Faraday Optical Isolator, Free-Space - 3

L a s e r s 39 Email: sales@spectra-physics.com • Web: spectra-physics.com HIGH ENERGY PULSED TUNABLE LASERS LASERS CW / QUASI-CW SOLID Q-SWITCHED DPSS LASERS ULTRAFAST LASERS LASER ACCESSORY KITS STATE LASERS DIODE LASERS GAS LASERS LASER ACCESSORIES Ordering Instructions for 1030 nm–1080 nm Isolators Center ë Selection 30 = 1030 nm 31 = 1031 nm 79 = 1079 nm 80 = 1080 nm Waveplate Option NN = No Waveplate WP = 1/2 Waveplate Aperture Size Selection 02 = 2 mm Aperture 04 = 4 mm Aperture 08 = 8 mm Aperture ISO-FRDY-OPT- - - Example 1: ISO-FRDY-OPT-02-64-WP • Aperture: 2" • Wavelength: 1064 nm...

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Faraday Optical Isolator, Free-Space
3Pages