Mode-locked laser for outputting femtosecond pulse

A mode-locked laser, femtosecond pulse technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve the problems of pulse splitting, femtosecond pulse difficulty, etc., to improve stability, reduce power consumption and process complexity, Ease of mass production

Inactive Publication Date: 2016-10-26
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, traditional semiconductor mode-locked lasers are limited by the gain-narrowing effect caused by mode competition and the effects o

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  • Mode-locked laser for outputting femtosecond pulse
  • Mode-locked laser for outputting femtosecond pulse
  • Mode-locked laser for outputting femtosecond pulse

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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] see figure 1 , 2 , The embodiment shown in 3,4. The embodiment of the present invention proposes a design scheme of an InP-based monolithic integrated semiconductor femtosecond pulse mode-locked laser that works near the communication wavelength of 1550nm and whose pulse output is expected to be about 300fs, including a semiconductor saturable absorber 1, a semiconductor optical amplifier 2, 1×32 channel arrayed waveguide grating 3 and phase modulation delay line 4. They are all integrated on the same InP substrate by standard semiconductor active / passive docking process.

[0029] The semiconductor saturable absorber 1 in this embodiment has the same material and epitaxial structure as the semiconductor optical ...

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Abstract

The present invention provides a mode-locked laser for outputting a femtosecond pulse. The mode-locked laser includes a semiconductor saturable absorber, a semiconductor light amplifier, a multi-channel array waveguide grate and a phase delay waveguide array that are sequentially connected through a passive ridge waveguide between two cleavage planes. The mode-locked laser can output the femtosecond pulse without using an external pulse compression technology, and has the advantages of simple manufacture process, compact structure, low cost, and mass production.

Description

technical field [0001] The invention belongs to the technical field of semiconductor optoelectronics, and in particular relates to an active-passive monolithic integrated semiconductor mode-locked laser that can realize femtosecond pulse output. Background technique [0002] Femtosecond optical pulses have been produced since the end of the 20th century due to their extremely short pulse width (duration within 10 -15 s level), high peak power and wide spectrum coverage and other excellent features have been developed rapidly. For example, in basic disciplines such as physics, chemistry and other microscopic ultrafast fields, because the change of its motion state usually occurs on the femtosecond scale, the usual macroscopic measurement methods cannot be used for normal test and analysis. However, the advantage of the extremely short pulse width of femtosecond lasers has changed this situation, and a large number of experimental work has been completed in related fields suc...

Claims

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Application Information

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IPC IPC(8): H01S5/065
CPCH01S5/0657
Inventor 刘松涛张瑞康陆丹吉晨
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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