View Enquiry List 
_Schema_58t5mfvk.jpg)
Acousto-Optic Cavity Dumpers / Pulse Pickers
The Brimrose Free Space Cavity Dumper is typically used in a mode-locked laser cavity to separate a single optical pulse from the circulating pulsed energy. The Brimrose high-speed Pulse Picker is used typically in high-speed optical pulse picking external to a laser cavity and is designed to extract single pulses from a fast train of laser pulses up to 100 MHz – few GHz pulse repetition rate, and re-direct the pulse into a different optical path.
WhatsappOverview
The Brimrose Free Space Cavity Dumper is typically used in a mode-locked laser cavity to separate a single optical pulse from the circulating pulsed energy. As a result, nearly all the laser energy is dumped out of the resonant cavity in the form of a single optical pulse. A cavity dumper offers high peak power and higher repetition frequencies.
The Brimrose high-speed Pulse Picker is used typically in high-speed optical pulse picking external to a laser cavity and is designed to extract single pulses from a fast train of laser pulses up to 100 MHz – few GHz pulse repetition rate, and re-direct the pulse into a different optical path. A cavity-dumped laser, a pulse picker is often called a cavity dumper, extracts the circulating pulse from the cavity in only every Nth round trip. The Pulse Picker is in most cases either an electro-optic modulator or an AO Modulator, combined with a suitable fast electronic driver.
Key Features
-
Free Space
-
High Diffraction Efficiency
-
Small Size
-
UV-VIS Optical Range
-
Brewster Angle Incidence
-
High Modulation Bandwidth
-
Up to 400 MHz Frequency
-
Higher Repetition frequencies
-
Laboratory Version
-
Custom Configurations Available
Applications
-
Mode-Locked Lasers for Generating Ultrashort Pulses with Higher Pulse Energies
-
Injection and Extraction of Pulses in a Regenerative Amplifier
-
OEM Designs
Cavity Dumper Technical Specifications
| Model # | TECD-380-95-543 | TECD-380-50-780 | TECD-380-95-800 | FSCD-250-54-BR-400 | FSCD-380-92-BR-800 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Substrate | Tellurium Dioxide (TeO2) | Fused Silica SiO2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Laser Wavelength (nm) |
543 nm | 780 nm | 800 nm | 250-450 nm | 800 nm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Active Aperture (mm) | 0.30 mm | 0.10 mm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Center Frequency (MHz) |
380 | 250 | 380 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3dB Modulation Bandwidth (MHz) |
95 | 50 | 95 | 54 | 92 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Optical Transmission (%) |
>95% | >98 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum Diffraction Efficiency (%) |
70% @ 1W | 40% @ 1W | 60% @ 2W | 70% @ 5W | 30% @ 10W | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Rise Time (nsec)/ Beam Spot (μm) |
10 nsec/31 μm | 20 nsec/62 μm | 5.8 nsec/29 μm | 10 nsec/72 μm | 6 nsec/42 μm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Acoustic Velocity | 4.2E+3 m/sec | 5.96E+3 m/sec | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Front Distortion | λ/10 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Bragg Angle | 1.4 mrad | 2.0 mrad | 36 mrad | 9 mrad@ 450 nm | 25 mrad | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Input Impedance | 50 ohms | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Optical Polarization | Linear | Linear (Vertical) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| V.S.W.R. | 2.1:1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Case Type | #120 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pulse Picker Technical Specifications
| Model # | TEPP-200-40-BR | FSPP-380-76-BR |
|---|---|---|
| Substrate | Tellurium Dioxide (TeO2) | Fused Silica (SiO2) |
| Laser Wavelength (nm) | 700 - 1200 nm | |
| Active Aperture | 0.10 mm | |
| Center Frequency | 200 MHz | 380 MHz |
| Digital Modulation Bandwidth | 40 MHz | 80 MHz |
| Optical Transmission | > 99.8% | |
| Diffraction Efficiency | ~ 40-50% | > 25% |
| Rise Time | 14 nsec | 6 nsec |
| Acoustic Velocity | 4.2E+3 m/sec | 5.96E+3 m/sec |
| RF Power Level (Watt) | 2 (50% duty cycle max.) | 10 (10% duty cycle max.) |
| Bragg Angle / Separation Angle | 29/59 mrad | 25/50 mrad |
| Wave Front Distortion | λ/10 | |
| Input Impedance | 50 ohms | |
| Optical Polarization | Linear | |
| V.S.W.R. | 2:1 | |
| RF Connector | SMA | |
