微型集成化低功耗电光调Q电路的设计

Design of Micro intergrated low power Electro-optic Q circuit

摘要:

研制了一种能在-40℃～+85℃环境下,适用于超小型无人测距照射平台的微型集成化低功耗脉冲激光器电光调Q电路,集成了高压电源与高压开关,克服了传统电光调Q电路驱动复杂、功耗高、边沿抖动、可靠性低、体积大不利于小型化集成的缺点。进行了实验验证,取得了实验数据：该型电光调Q电路功耗小于2W,调Q高压在1～5kV范围内可调,脉冲上升沿或下降沿小于25ns,可直接采用TTL控制信号触发,触发频率可达1KHz,适用于多种电光调Q晶体,易于集成使用,为高重频、高峰值功率脉冲激光器提供可靠的电光调Q电路,已在多个型号项目上应用。

Abstract:

A micro integrated low-power pulse laser electro-optic Q-switching circuit is developed in this paper, which can be used in the environment of - 40 ℃ ~ + 85 ℃, and is suitable for the ultra-small unmanned ranging and irradiation platform. The circuit integrates high voltage power supply and high voltage switch, which overcomes the disadvantages of the traditional electro-optic Q-switching circuit, such as complex driving, high power consumption, edge jitter, low reliability and large volume. The experimental results show that the power consumption of the designed electro-optic Q-switch circuit is less than 2W, the high voltage of Q-switch is adjustable in the range of 1-5kv, and the rising or falling edge of pulse is less than 25ns. It can be triggered by TTL control signal directly, and the trigger frequency can reach 1kHz. It is suitable for many electro-optic Q-switch crystals, easy to integrate and use, and can provide reliable electro-optic Q-switch circuit for high repetition rate and high peak power pulse laser. In addition, our designed circuit has been applied in many military projects.