Abstract: Upon starting the lasing device after having a stop state, gas retaining in the gas circulation path and the optical resonator is released through the gas release valve opened by the gas pressure controller. During a time calculated by the open-time calculator in response to the immediately preceding stop time of the lasing device, laser medium gas in the piping between the laser medium gas supply device and the gas supply valve is released, together with the retaining gas, through the gas supply valve opened by the gas pressure controller. The structure reduces costs by using decreased number of valves and suppresses consumption of laser medium gas.

Abstract: Upon starting the lasing device after having a stop state, gas retaining in the gas circulation path and the optical resonator is released through the gas release valve opened by the gas pressure controller. During a time calculated by the open-time calculator in response to the immediately preceding stop time of the lasing device, laser medium gas in the piping between the laser medium gas supply device and the gas supply valve is released, together with the retaining gas, through the gas supply valve opened by the gas pressure controller. The structure reduces costs by using decreased number of valves and suppresses consumption of laser medium gas.

Abstract: A gas laser oscillator appropriately detecting a clogging of a laying pipe of a sub ejection apparatus is disclosed. The gas laser oscillator according to the present invention includes a laser gas flow pipe, a driving part, a divide wall, a main ejection apparatus, a sub ejection apparatus, a detect portion, and a clogged laying pipe judge part. The laser gas flow pipe constitutes a circulating route of the laser gas. The driving part drives the air blower for blowing the laser gas. The divide wall separates the air blower and the driving part. The main ejection apparatus has a valve, and ejects laser gas from the laser gas flow pipe. The sub ejection apparatus ejects laser gas from the driving part. The detector detects an amount of laser gas ejected from the main ejection apparatus and the sub ejection apparatus.

Abstract: Flow laminators are attached to gas introducing parts installed in a laser generator preventing impurities from attaching to surfaces of a translucent mirror and a condensing lens. The flow laminators prevent airflow from producing a turbulent flow and air on the surface of the mirror and the lens are cleaned up, therewith reducing attachment of impurities further.

Abstract: A gas laser oscillator appropriately detecting a clogging of a laying pipe of a sub ejection apparatus is disclosed. The gas laser oscillator according to the present invention includes a laser gas flow pipe, a driving part, a divide wall, a main ejection apparatus, a sub ejection apparatus, a detect portion, and a clogged laying pipe judge part. The laser gas flow pipe constitutes a circulating route of the laser gas. The driving part drives the air blower for blowing the laser gas. The divide wall separates the air blower and the driving part. The main ejection apparatus has a valve, and ejects laser gas from the laser gas flow pipe. The sub ejection apparatus ejects laser gas from the driving part. The detector detects an amount of laser gas ejected from the main ejection apparatus and the sub ejection apparatus.

Abstract: Flow laminators are attached to gas introducing parts installed in a laser generator preventing impurities from attaching to surfaces of a translucent mirror and a condensing lens. The flow laminators prevent airflow from producing a turbulent flow and air on the surface of the mirror and the lens are cleaned up, therewith reducing attachment of impurities further.