VLM-520-53 SPT

Laser diodes are semiconductor devices which emit laser light through spontaneous emission stimulated by an electric current. Many applications benefit from the high-precision control and power that laser diodes can offer. One such application is the VLM-520-53 SPT, a laser diode module with specific optics and design components to meet customer requirements for specific applications. This article will discuss its application fields and working principles.

Application Fields of VLM-520-53 SPT

The VLM-520-53 SPT is a semiconductor laser module specifically designed for use in laboratory and scientific research. It features a wide range of operating parameters including a wavelength range of 488nm to 532nm, a pulse rate of up to 500kHz, and a power range of 10mW to 41mW. The module includes a single-stage thermoelectric cooler for temperature regulation, as well as a variable optical attenuator to adjust desired laser power. Additionally, a variety of fiber pigtails and connectors are available for system integration purposes. Due to its wide variety of features, the VLM-520-53 SPT is well-suited for use in medical device development, optical applications, and biological research.

Working Principle of VLM-520-53 SPT

The VLM-520-53 SPT is a single-stage thermoelectric cooled semiconductor laser module. The thermoelectric cooler is composed of two Peltier cells which are connected in series. One of the Peltier cells is used to cool the active laser diode while the other is used to heat the baseplate. By the thermoelectric cooling process, heat is thereby drawn away from the laser diode and thermal noise is kept to a minimum.

The laser light is generated by the forward-biased p-n junction of the semiconductor laser diode. The light is amplified through an optical resonator formed by two reflective mirrors placed at the end of the semiconductor chip. The laser then emerges from the exit window of the cavity and is collimated by the optics on the module. The amount of power emitted is controlled by the injection current. The variable optical attenuator is used to further adjust the laser power for system optimization.

Conclusion

The VLM-520-53 SPT is a semiconductor laser diode module specifically designed for laboratory and scientific research applications. It features a wide range of operating parameters including a wavelength range of 488nm to 532nm, a pulse rate of up to 500kHz, and a power range of 10mW to 41mW. It includes a single-stage thermoelectric cooler for temperature regulation as well as a variable optical attenuator to control laser power. It is suitable for applications such as medical device development, biological research, and optical applications. Its working principle relies on thermoelectric cooling to draw away heat from the laser diode, as well as a forward biased p-n junction semi-conductive chip to generate the light and an optical resonator for amplification.