Tunable picosecond pulses from gain-switched grating coupled surface emitting laser

被引：5

作者：

Smolski, O ^{[1
]}

Jiang, J ^{[1
]}

Roychoudhuri, C ^{[1
]}

Portnoi, E ^{[1
]}

Venus, G ^{[1
]}

Bullington, J ^{[1
]}

机构：

[1] Infinite Photon Inc, Orlando, FL 32826 USA

来源：

NOVEL IN-PLANE SEMICONDUCTOR LASERS | 2002年 / 4651卷

关键词：

external-cavity lasers; grating couplers; surface emitting laser; wavelength tuning; short pulse generation; semiconductor laser;

D O I：

10.1117/12.467966

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have demonstrated a 60 nm-tunable, 160 psec-width, optical pulses from a 980 nm Grating Coupled Surface Emitting Laser (GCSEL) in an external cavity under nanosecond pump pulses. GCSEL is in-plane laser monolithically integrated with grating outcoupler. The grating was detuned from second order Bragg condition and it served as an efficient interface between planar waveguide and free space. Wavelength tuning was simply achieved by tilting an external flat mirror provided wavelength selective feedback to the GCSEL chip. Gain switched pulses with wavelength linewidth less than 0.1 nm and peak power of 200 mW have been obtained. In our experiments we measured a shortest optical pulses by reducing a distance between external mirror and laser diode chip. This corresponded with decreasing the effective laser cavity length and the cavity round-trip time as well.

引用

页码：59 / 62

页数：4

共 8 条

[1] HIGHLY ATTENUATING EXTERNAL-CAVITY FOR PICOSECOND-TUNABLE PULSE GENERATION FROM GAIN Q-SWITCHED LASER-DIODES [J].