上海潤芒光電科技有限公司
上海潤芒光電科技有限公司
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產(chǎn)品型號OG-B/F
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所 在 地上海市
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更新時間：2024-08-21 07:43:31瀏覽次數(shù)：114次
聯(lián)系我時，請告知來自 儀表網(wǎng)產(chǎn)品介紹OG-B/F固定門開啟時間的脈沖選擇器具有固定門打開時間的電光脈沖選擇器系統(tǒng)可以從飛秒脈沖序列中選擇單個脈沖，用于許多應(yīng)用場合
OG-B/F固定門開啟時間的脈沖選擇器
具有固定門打開時間的電光脈沖選擇器系統(tǒng)可以從飛秒脈沖序列中選擇單個脈沖，用于許多應(yīng)用場合。該系統(tǒng)還用于超快激光放大器系統(tǒng)的注入/發(fā)射，以及提高放大器的對比度。
| 產(chǎn)品特點 | 典型應(yīng)用 |
| * Compatible with Ti:S and Yb-doped 20-150 MHz ultrafast oscillators * Suitable for building Ti:S or Yb ultrafast regenerative amplifiers * Possible operating wavelengths from 200 to 2700 nm * Rise time down to 700 ps * Excellent contrast ratio of >1500:1 * Transmission of complete system >90% * Multifunctional control unit with adjustable delay generator * USB control, Windows software+LabView driver | * Time-Resolved Ultrafast Studies -Pump-Probe Spectroscopy * Material and Biological Tissue Processing -Ultrafast Micromachining * Laser Systems Design, Integration and Amplification -Ultrafast Oscillator and Amplifier Pulse Selection -Injection/Ejection of Pulses in Ultrafast Amplifier Systems -Pulse Slicing for Contrast Increase -OEM Integration -Q-Switching * Ultrafast Laser Diagnostics, Accessories and Components -Novel Ultrafast Fiber Laser Development -Amplifier Design -Automation of Complex Experimental Setups |
An electro-optic modulator (EOM) is a pulse selection device based on the Pockels electro-optic effect. Electric field applied to an optical medium induces birefringence and allows fast selection of passing laser pulses. Thus, such a device might be used as a fast pulse picker solution.
Electro-optic pulse pickers with fixed gate duration are widely used in the following applications:
- picking of single laser pulses from a train of pulses;
- reduction of repetition rate of laser pulses;
- building regenerative laser amplifiers: injection of seed pulses into amplifier cavity and ejection of amplified pulses out of amplifier cavity;
- pulse slicer, i.e. output amplified pulse contrast improvement via cleaning of "parasitic" pulses.
The OG pulse picker consists of a certain optical setup and an electronic control and power supply unit.
Optical setup of a pulse picker comprises two crossed polarizers with a Pockels cell placed in between. Pulse selection is performed with the use of the Pockels effect — a short high-voltage electric pulse induces birefringence in the Pockels cell's optical crystal allowing precise rotation of the polarization plane of a certain laser pulse. Then this pulse may be separated from a train of consecutive pulses by using a polarizer. Since the response time of the Pockels effect is very short, such a unit is suitable for working with dense pulse trains and ultrashort laser pulses.
| OG-F-D-... | OG-B-D-... | OG-B-B-... | OG-B-R/K-... | |
| Electrooptic crystal | DKDP | BBO | RTP or KTP | |
| Operational wavelength range (standard models) | 510-540 nm / 700-1000 nm / 1000-1100 nm / 1250 nm | 510-540 nm / 700-1000 nm / 1000-1100 nm / 1250 nm | 1000-1100 nm / 1500-1600 nm / 1550+780 nm | |
| Possible custom wavelengths | from 340 to 1280 nm | from 200 to 2200 nm | from 1000 to 2700 nm | |
| Minimum repetition rate of picked pulses | single-shot | |||
| Maximum repetition rate of picked pulses (standard models) | 1 kHz | 3 kHz / 10 kHz / 50 kHz / 100 kHz | 3 kHz / 10 kHz / 50 kHz / 100 kHz / 200 kHz / 1 MHz | |
| Clear aperture | 6 mm | 6 mm (up to 20 mm upon request) | 2.5 mm (up to 5 mm upon request) | 3.5 mm (up to 10 mm upon request) |
| HV pulse (gate) shape | bell-shaped | |||
| HV pulse (gate) length | 3 ns | 8 ns | ||
| Rise time | 700 ps | 3.5 ns | ||
| Fall time | 2 ns | 3.5 ns | ||
| Contrast(1) | >1500:1 | >700:1 | >800:1 | |
| Pockels cell voltage | up to 10 kV | up to 4 kV | up to 3 kV | |
| Optical scheme | half-wave | half-wave/quarter-wave at λ<600 nm; at λ>600 nm - quarter-wave or half-wave with double crystal cell | half-wave | |
| Trigger | internal/external | |||
| Complete system transmission at central wavelength | >85% (PC + two Glan-Taylor prisms, default package) | |||
| Input optical train repetition rate | 2 MHz …150 MHz with internal or external trigger with optical or electric sync to input train; 1 Hz…2 MHz only with external trigger signal(2) | |||
| Sync source for internal trigger mode | optical/electric | |||
| Additional control modes | by edge / by level / built-in burst generator with internal or external trigger | |||
| Channel delay time | 0...10 us (up to 1 ms upon request)(3) | 0...1 us (up to 5 us upon request)(3) | ||
| Cooling | passive at up to 3 kHz output rate, water-cooled(4) at 10 kHz and higher | |||
| (1) - energy ratio of a picked and any non-picked pulse. The given contrast values are valid for adjacent pulses; | ||||
半波模式下脈沖選擇器工作布局
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