上海润芒光电科技有限公司
上海润芒光电科技有限公司
产品介绍OG-V开关时间可调脉冲选择器OG-V快脉冲选择器系列具有可调的传输门时间，用于从飞秒脉冲序列中选择相邻脉冲组
OG-V 开关时间可调脉冲选择器
OG-V快脉冲选择器系列具有可调的传输门时间，用于从飞秒脉冲序列中选择相邻脉冲组。
The following applications might be pointed out when using pulse pickers with adjustable transmission gate time with femtosecond and picosecond lasers:
- selection of groups of adjacent pulses (bursts) from a train of pulses;
- control of regenerative amplifier operation: injection of a seed pulse into a cavity and ejection of the amplified pulse out of the cavity;
- usage as optical shutters (fast optical modulators) and Q-switch cavity applications;
- selection of single laser pulses in case of high jitter in relation to electric trigger pulse.
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 quasi-rectangular 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 or a group of adjacent laser pulses depending on the duration of the high-voltage pulse (transmission window). Then this or these pulses may be separated from a train of consecutive pulses by using a polarizer.
| 产品特点 | 典型应用 |
| * Compatible with Ti:S and Yb-doped 20-150 MHz ultrafast oscillators * Suitable for building Ti:S or Yb ultrafast regenerative amplifiers * Possible wavelengths from 200 to 2700 nm * Possible adjustable gate width from 20 ns to 10 us * Transmission >90% * HV amplitude up to 10 kV * 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 |
Electronic control unit of a pulse selector is built using programmable logic components and contains such built-in modules as optical and electronic synchronization, trigger pulse generation, frequency division, multi-channel delay signal generation, high-voltage drivers. The unit allows for multiple usage scenarios given below for integration in various laser setups:
- external or internal trigger;
- synchronization to optical (built-in photodetector) or electric signal;
- two independent delay channel groups, each with its trigger and synchronization signals; spare channels may be used as general purpose delay channels for triggering other experimental equipment (e.g. oscilloscopes, pump lasers, streak-cameras etc.);
- additional control modes with triggering by edge/level of an external signal or via a built-in burst generator allow formation of various output pulse patterns;
- up to 4 synchronized Pockels cells may be driven by a single electronic control unit.
OG-B系列脉冲选择器光学模块和控制模块 OG系列脉冲选择器控制模块
| 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; | ||||
您感兴趣的产品PRODUCTS YOU ARE INTERESTED IN
仪表网 设计制作，未经允许翻录必究 .
请输入账号
请输入密码
请输验证码
